2025.03.07
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The workshop on large-scale complex systems and dynamic reduced modeling was held in Sendai, Japan, jointly with Prof. Nakao's laboratory at Tokyo University of Science and Prof. Kawahara's laboratory at Osaka University, aiming at extending the reduced modeling to large-scale nonlinear complex flow data.
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2025.03.03
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Check out our new paper, Logarithmic mean approximation in improving entropy conservation in KEEP scheme with pressure equilibrium preservation property for compressible flows published in Journal of Computational Physics. We derived an approximation that improves entropy conservation in the KEEP schemes and satisfies pressure equilibrium.
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2025.02.04
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Congratulations to Itsui for receiving the JSASS Excellent Presentation Awards at 56th JSASS fluid dynamics conference!
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2025.02.03
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The results of joint research with MHI researchers Validation of the Applicability of LES Analysis Technology for Accurate Prediction of Large-Scale Unsteady Flow around Aircraft were published in the New Products and New Technologies Special Issue of the MHI Technical Journal.
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2025.01.24
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Kawai presented our recent study at Symposium on Aerodynamics in Aerospace in Fukushima, Japan.
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2025.01.14
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DNS database published in "Wall pressure fluctuations in wall heated and cooled shock wave and turbulent boundary layer interactions, International Journal of Heat and Fluid Flow" is now available at Flow Database.
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2025.01.13
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Check out our new paper, Localized thickened flame model for stretched premixed flames published in Combustion and Flame. We propose extending the Localised Thicked Flame (LTF) model, a combustion model with a detailed reaction mechanism proposed in 2021, for stretched flames.
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2025.01.01
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Kuya has moved to the Fluid Mechanics Group at the Department of Aeronautics and Astronautics, Kyushu University, as Associate Professor.
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2024.12.25
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Congratulations to Sashida and Homma for receiving the Research Fellowship for Young Scientist DC1 of the Japan Society for the Promotion of Science (JSPS)!
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2024.12.23
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Kawai was invited to give a talk at the Solar-Terrestrial Environment (STE) Simulation Workshop held in Tohoku University, Japan.
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2024.12.20
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Kawai was invited to give a talk at the 17th Symposium on Industrial Applications of Supercomputing Technology held in Tokyo, Japan.
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2024.12.13
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Eleven members from our lab. presented their results at the 38th JSFM Computational Fluid Dynamics Symposium held at the Institute of Industrial Science, the University of Tokyo. We presented in a wide range of research fields, including robust and high-fidelity numerical schemes, LES turbulence models, fluid analysis using machine learning, large-scale data compression, and the analyses of complex fluid phenomena such as turbulent transitions and aero-acoustics.
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2024.12.08
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Check out our new paper, Exact parallelized dynamic mode decomposition with Hankel matrix for large-scale flow data published in Theoretical and Computational Fluid Dynamics. We propose a fast and exactly paralleled computing method that enables DMD and Hankel DMD for very large data.
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2024.12.03
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The Fugaku Aircraft Project under the Program for Promoting Research on the Supercomputer Fugaku co-organizes the 8th HPC workshop at the University of Tokyo, and Kawai presented the latest results of the Fugaku Aircraft Project.
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2024.11.26
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Kawai, Iwatani, Maejima, and Itsui presented their works at The APS 77th Annual Meeting of the Division of Fluid Dynamics (APS-DFD) in Salt Lake City UT, the United States.
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2024.11.21
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Kawai was invited to give a talk at the Workshop on Coherent Structures for Turbulence Modeling organized by Los Alamos National Laboratory, held in Santa Fe, United States.
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2024.11.20
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Nagata and Yoshida presented their works at International Conference on Flow Dynamics 2024 in Sendai, Japan.
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2024.11.15
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We visited Prof. Susumu Goto's lab at Osaka University and had a joint seminar. Iwatani (D2), Maejima (D1), and Itsui (M1) gave talks and exchanged opinions and ideas.
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2024.11.13
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Kawai was invited to give a talk at The 1st Computational Science Forum 2024 (Online).
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2024.09.27
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Congratulations to Homma for receiving the Research Fellowship for Young Scientist DC1 and Fujii and Wakimura for receiving the Research Fellowship for Young Scientist PD of the Japan Society for the Promotion of Science (JSPS)!
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2024.09.27
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Asada, Maeyama, Maejima, Itsui, and Yoshida presented their works at the Annual Meeting of the Japan Society of Fluid Mechanics 2024 in Sendai, Japan.
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2024.09.25
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Sashida completed his master's program. Congratulations!
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2024.08.27
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Check out our new paper, Physics-informed machine-learning solution to log-layer mismatch in wall-modeled large-eddy simulation published in Physical Review Fluids. By incorporating physics-informed scaling into machine learning, we show that it is possible to solve the log-layer mismatch problem for wall-modeled LES under various Reynolds and Mach number conditions, including extrapolations.
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2024.08.02
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Kawai and Homma presented their works at AIAA AVIATION Forum and Exposition 2024 in Las Vegas, the United States.
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2024.07.19
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Kawai and Homma presented their works at 12th International Conference on Computational Fluid Dynamics (ICCFD12) in Kobe, Japan.
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2024.07.16
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Prof. Kawai's article, "How to utilize high-fidelity large-scale nonlinear complex flow data (in Japanese)," was published in the JSME Computational Mechanics Division Newsletter as a special issue on "Information Science and CFD."
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2024.07.05
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Asada, Maeyama, Itsui, and Miwa presented their works at 56th JSASS fluid dynamics conference in Kagoshima, Japan.
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2024.06.28
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Iwatani, Maejima, and Sashida presented their studies at Thirteenth International Symposium on Turbulence and Shear Flow Phenomena (TSFP13) in Montreal, Canada.
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2024.06.27
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Check out our new paper, "A posteriori study on wall modeling in large eddy simulation using a nonlocal data-driven approach," published in Physics of Fluids.
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2024.06.06
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Asada presented his work at AIAA/CEAS Aeroacoustics Conference 2024 in Rome, Italy.
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2024.06.03
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Kawai visited Prof. Pirozzoli at Sapienza University of Rome and gave a seminar talk at the Department of Mechanical and Aerospace Engineering.
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2024.04.22
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Kawai visited Prof. Yang at Pennsylvania State University and gave a seminar talk at the Special Fluid Dynamics Research Consortium.
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2024.04.19
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Kawai was invited to give a talk at The Penn Institute for Computational Science's colloquium series at the University of Pennsylvania.
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2024.04.12
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Check out our new paper, "Wall-modeled LES of transonic buffet over NASA-CRM using FFVHC-ACE," published in AIAA Journal. This paper develops a KEEP/shock-capturing hybrid scheme and predicts transonic buffets over NASA-CRM aircraft using FFVHC-ACE.
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2024.04.01
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Welcome two Ph.D. students and eight master students joined our group! people in our group. The 2024 fiscal year has begun.
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2024.03.26
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Congratulations to Maejima for receiving the JSME Miura Award and to Itsui for receiving the JSASS Student Award!
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2024.03.26
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Congratulations! Four students completed the master's course, and four students completed the bachelor's course.
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2024.03.15
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Miyake and Yoshida presented their studies at The Japan Society of Mechanical Engineers Tohoku Branch 59th Annual Meeting in Sendai, Japan. Miyake received the Best Young Presentation Fellow Award. Congratulations!
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2024.03.12
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Honma presented his study on next-generation computational algorithm of KEEP schemes for Fugaku-Next at The 3rd Research Workshop of hProgram for Promoting Research on the Supercomputer Fugaku" in Tokyo, Japan.
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2024.03.08
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Check out our new paper, "Theoretical link in numerical shock thickness and shock-capturing dissipation" published in Journal of Computational Physics. This paper theoretically derives the link between shock-capturing dissipation and resultant shock thickness and applies it to shock thickness control at hierarchical boundaries.
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2024.02.09
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Check out our new paper, "Turbulence anisotropy effects on corner-flow separation: physics and turbulence modeling" published in Journal of Fluid Mechanics. This paper reveals the secondary motion in corner-flow separation caused by turbulence anisotropy and proposes a RANS turbulence model with quadratic constitutive relations. The LES database is available at Flow Database.
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2024.01.15
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Asada, Maeyama, Maejima, and Sashida presented their work at AIAA SciTech 2024 in Orlando, the United States.
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2023.12.17
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Asada, Kawai, Iwatani, Sato, Nagata, Honma, and Matsumoto presented their work at the 37th JSFM Computational Fluid Dynamics Symposium in Nagoya, Japan.
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2023.12.06
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Check out our new paper, "Temporal discretization for improving kinetic-energy and entropy preservation properties in KEEP schemes" published in Computers & Fluids. This paper proposes a fully conservative KEEP scheme that satisfies asymptotic kinetic energy and entropy preservation both in time and space discretization.
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2023.12.05
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Our Fugaku Aircraft Project under the Program for Promoting Research on the Supercomputer Fugaku co-organizes the
7th HPC workshop at the University of Tokyo, and Kawai presented the latest results of the Fugaku Aircraft Project.
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2023.11.21
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Asada, Iwatani, and Maejima presented their works at The APS 76th Annual Meeting of the Division of Fluid Dynamics (APS-DFD) in Washington DC, the United States.
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2023.11.08
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Maejima, Sashida, and Honma presented their works at International Conference on Flow Dynamics 2023 in Sendai, Japan.
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2023.10.02
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Supersonic turbulent boundary layer DNS database published in
"Near-wall numerical coherent structures and turbulence generation in wall-modeled large eddy simulation, Journal of Fluid Mechanics" is now available at Flow Database.
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2023.10.01
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Welcome to new faculty member, Momoha Nishimura (Project Assistant Professor)! people in our group
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2023.09.25
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Maruyama completed her master's program, Yoshida (early graduation) and Aziz completed their bachelor's programs. Congratulations!
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2023.09.24
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The results of the MEXT Program for Promoting Researches on the Supercomputer Fugaku, Research toward DX in aircraft development led by digital flight provided by Professor Kawai was broadcast on NHK Science ZERO!
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2023.09.22
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Iwatani and Maejima presented their works at the Annual Meeting of the Japan Society of Fluid Mechanics 2023 in Tokyo, Japan.
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2023.09.20
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Kuya, Totani, and Kawai received Award for Outstanding Paper in Fluid Mechanics, Japan Society of Fluid Mechanics for their paper on the KEEP scheme.
Kuya gave an award lecture at the Annual Meeting of the Japan Society of Fluid Mechanics 2023 held in Tokyo. Congratulations!
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2023.09.08
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Kawai, Tamaki, and Hirai presented their works at ETMM14 Symposium in Barcelona, Spain.
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2023.09.01
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An interview with Kawai was published in Computational Engineering Navi vol. 25. The article describes our activities of the MEXT Program for Promoting Researches on the Supercomputer Fugaku, Research toward DX in aircraft development led by digital flight.
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2023.08.26
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Check out our new paper, "Wall pressure fluctuations in wall heated and cooled shock wave and turbulent boundary layer interactions" published in International Journal of Heat and Fluid Flow. This study clarifies the relation between low-frequency shock wave oscillations and wall pressure spectra in shock wave and turbulent boundary layer interactions with heated and cooled walls.
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2023.08.25
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Check out our new paper, "Near-wall numerical coherent structures and turbulence generation in wall-modeled large eddy simulation" published in Journal of Fluid Mechanics. This study reveals the presence of streak-like structures within the near-wall unresolved regions of the wall-modeled LES, which play a significant role in driving turbulence generation.
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2023.08.18
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Kawai gave a talk at Tohoku University Aircraft Forum held in Osaka, Japan.
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2023.08.02
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Research topics were updated in Research.
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2023.07.13
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Asada, Sato, Sashida, and Matsumoto presented their works at 55th JSASS fluid dynamics conference in Tokyo, Japan.
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2023.07.11
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Kawai gave an invited keynote lecture at AJK-FED2023 in Osaka, Japan.
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2023.06.26
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Congratulations to Kuya, Totani and Kawai for receiving Award for Outstanding Paper in Fluid Mechanics from JSFM for the paper on KEEP scheme.
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2023.06.13
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Sashida presented his work at AIAA Aviation 2023 in San Diego, the United States.
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2023.06.12
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Check out our new paper, "Ordinary-differntial-equation-based nonequilibrium wall modeling for large-eddy simulation" published in Physical Review Fluids. This paper proposes a theoretical-based nonequilibrium wall model that incorporates the non-equilibrium terms of the boundary layer into ordinary differential equations. The high-Reynolds-number LES database is now available at Flow Database.
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2023.06.08
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Welcome to three new undergraduate students! people in our group.
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2023.04.08
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Check out our new paper, "FFVHC-ACE: fully automated Cartesian-grid-based solver for compressible large-eddy simulation" published in AIAA Journal. This paper discusses our fully automated, high-fidelity compressible LES solver FFVHC-ACE.
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2023.04.01
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Welcome to new faculty member, Shigetaka Kawai (Project Researcher), and six new graduate students! people in our group. The 2023 fiscal year has begun.
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2023.03.31
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Check out our new paper, "Identifying the Self-Sustaining Mechanisms of Transonic Airfoil Buffet with Resolvent Analysis" published in AIAA Journal. This paper analyses the LES data of the transonic airfoil buffet with resolvent analysis and identifies the self-sustaining shock oscillation mechanism.
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2023.03.24
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Our research proposal, "Research toward DX in aircraft development led by digital flight" (Project Leader: Soshi Kawai), has been selected for the MEXT Program for Promoting Research on the Supercomputer Fugaku.
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2022.03.24
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Dr. Hirai received the Dean's Award of the Graduate School of Engineering at Tohoku University. Congratulations!
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2022.03.24
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Congratulations! Two students completed the doctoral course, five students completed the master's course, and one student completed the bachelor's course.
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2023.03.10
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Nasukawa presented his work at Symposium on Shock Waves in Tsukuba, Japan.
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2023.02.17
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Kawai visited UCLA, USA, and gave a seminar talk.
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2023.02.07
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Check out our new paper, "Fully conservative and pressure-equilibrium preserving scheme for compressible multi-component flows" published in Journal of Computational Physics. This paper proposes a spatial discretization scheme that maintains both the conservation and pressure equilibrium in compressible multi-component flows, something that existing numerical methods fail to do robustly.
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2023.01.27
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Tamaki and Asada presented their works at AIAA SciTech 2023 in National Harbor, the United States.
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2023.01.06
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Kawai presented our work at Symposium on Aerodynamics in Aerospace in Beppu, Japan.
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2023.01.05
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Check out our new paper, "Conservative low-pass filter with compact stencils for hierarchical Cartesian mesh" published in Computers & Fluids. This paper proposes a conservative low-pass explicit filter with compact stencils for hierarchical Cartesian mesh.
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2023.01.02
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Check out our new paper, "Effects of spanwise domain size on LES-predicted aerodynamics of stalled airfoil" published in AIAA Journal.
This paper investigates the effects of spanwise domain size on LES-predicted aerodynamic forces of the stalled airfoil at a high Reynolds number.
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2022.12.21
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Congratulations to Fujiwara for receiving Grand Prix, Spurcle Award, Audience Award at Tohoku University Business Idea Contest 2022.
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2022.12.20
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Prof. Yoshinobu Kawahara of Osaka University was invited to give a seminar lecture on "Operator-theory-based data analysis of nonlinear dynamics: current status and issues".
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2022.12.18
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Check out our new paper, "Wall-modeled large-eddy simulation with second-order-accurate upwind scheme" published in AIAA Journal. This paper investigates the criteria for wall-model LES using the second-order accurate upwind method, often used for engineering codes.
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2022.12.16
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Tamaki, Asada, Hirai, Aoyama, Fujiwara, Maejima, and Sashida presented their works at the 36th JSFM CFD symposium (online).
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2022.12.01
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Congratulations to Hirai for receiving Student Best Presentation Award at 54th JSASS fluid dynamics conference.
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2022.11.20
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Tamaki, Meyama, Iwatani, Fujiwara, and Maejima presented their works at APS-DFD2022 in Indianapolis, the United States.
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2022.11.11
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Kawai gave a special lecture for Chugoku-Shikoku Branch, The Japan Society of Mechanical Engineers at Okayama University.
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2022.11.08
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Kawai gave a lecture to high school students at Maebashi High School in Gunma Prefecture (Online).
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2022.10.26
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Check out our new paper, "Wall-resolved large-eddy simulation of near-stall airfoil flow at Re_c=10^7" published in AIAA Journal. This is the first LES at the high Reynolds number condition Re_c=10^7 around an airfoil. The high-Reynolds-number LES database is now available at Flow Database.
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2022.10.21
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An award-winning interview with Asada is now available at Fugaku PR interview site.
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2022.10.20
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Congratulations to Fujiwara for receiving the first prize at GEEK TEN 2022.
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2022.10.13
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Asada presented his work at the 60th Aircraft Symposium in Niigata, Japan.
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2022.10.04
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Congratulations to Iwatani for receiving the Research Fellowship for Young Scientist (DC1) of the Japan Society for the Promotion of Science (JSPS)!
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2022.09.29
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Maeyama presented his work at 2022 Annual Meeting of the Japan Society of Fluid Mechanics in Morioka, Japan.
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2022.09.26
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Congratulations to Sashida for the Early Graduation and receiving the B.S.!
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2022.09.15
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The LES of Mitsubishi SpaceJet at real flight conditions conducted by the Mitsubishi Heavy Industries Group using our compressible LES solver FFVHC-ACE, which is being developed under the MEXT Program for Promoting Researches on the Supercomputer Fugaku, is on the over of Computational Engineering Navi, vol. 23.
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2022.09.15
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An interview with Kawai and his writings were published in Computational Engineering Navi, vol. 23.
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2022.09.07
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Kawai gave a talk at 2nd US-Japan Workshop on Data-Driven Fluid Dynamics in Kobe, Japan.
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2022.08.26
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An interview with Kawai was published in the HPCI Magazine "Fugaku Hyakkei".
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2022.08.26
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Kawai gives an invited talk at the Industrial Committee for Supercomputing Promotion "Prospects for Large-Scale Computation" (Online).
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2022.08.06
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Check out our new paper, "Comprehensive analysis of entropy conservation property of non-dissipative schemes for compressible flows: KEEP scheme redefined" published in Journal of Computational Physics. The differences in entropy conservation property in different discretizations are clarified analytically, and the KEEP scheme is redefined.
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2022.08.05
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Asada presented their work at the WCCM-APCOM 2022 Congress (Online).
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2022.07.22
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Hirai presented his work at 12th International Symposium on Turbulence and Shear Flow Phenomena (TSFP 12), online.
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2022.07.17
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Kuya and Asada presented their works at 11th International Conference on Computational Fluid Dynamics (ICCFD 11) in Maui, the United States.
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2022.07.01
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Tamaki, Asada, Hirai, Aoyama, and Ida presented their works at 54th JSASS fluid dynamics conference in Morioka, Japan.
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2022.06.28
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Tamaki presented his work at AIAA AVIATION Forum in Chicago, the United States.
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2022.06.08
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Check out our new paper, "Modified wavenumber and aliasing errors of split convective forms for compressible flows" published in Journal of Computational Physics. Contrary to conventional arguments, this paper shows that the split forms in finite difference methods increase aliasing errors, and the superior numerical stability of KEP or KEEP schemes is due to the enhanced preservation property of the secondary conservative variables.
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2022.06.07
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Welcome to five new undergraduate students! people in our group.
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2022.05.02
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The content on our LES of full aircraft configuration using Supercomputer Fugaku was broadcast on NHK WORLD-JAPAN Direct TalkuA Supercomputer for Everyonev.
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2022.04.12
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Congratulations to Asada (Assis. Prof.) for receiving the Next Generation Researcher Award at the Symposimu of MEXT Program for Promoting Researches on the Supercomputer Fugaku.
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2022.04.01
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Welcome to new faculty member, Yuichi Kuya (Associate Prof.), and six new graduate students! people in our group. The 2022 fiscal year has begun.
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2022.03.25
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Congratulations to Iwatani, Fujiwara, Maruyama (Master students), and Maejima (Undergraduate student) for receiving the Young Researcher Best Presentation Award at the 35st JSFM CFD symposium!
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2022.03.25
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Congratulations to Maejima (Undergraduate student) for receiving the JSME Hatakeyama Award!
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2022.03.25
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Congratulations! One student completed the master's program, and three graduates of the bachelor's program.
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2022.02.15
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The 1st Fugaku Aircraft Project Symposium will be held online on March 23, 2022.
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2022.02.14
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Kawai (Prof.) gives an invited talk on "Stable and non-dissipative numerical scheme (KEEP scheme) for compressible flows and LES of full aircraft configurations" at the 5th CAE workshop.
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2022.01.28
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Kawai (Prof.) has joined the editorial board of Theoretical and Computational Fluid Dynamics - Springer as Associate Editor.
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2022.01.15
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Kawai (Prof.) gives an invited talk on "Fully-automated high-fidelity scale-resolving simulation around full aircraft configurations" at The 4th R-CCS International Symposium.
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2022.01.14
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Congratulations to Asada (Assis. Prof.) for receiving the Best CFD Graphics Award (1st place) at the 35st JSFM CFD symposium!
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2021.12.16
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Tamaki (Assis. Prof.), Asada (Proj. Assis. Prof.), Hirai (Ph.D. student), Tanino, Iwatani, Fujiwara, Maruyama (Master students), and Mejima (Undergraduate student) from our laboratory presented their works at the 35th JSASS JSFM CFD symposium (online)D
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2021.12.14
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Check out our new paper, "Semi-local Reynolds number's effects in scaling turbulent statistics for wall heated/cooled supersonic turbulent boundary layers," published in Physical Review Fluids. This paper indicates the importance of the semi-local Reynolds number, rather than the temperature or density themselves, on turbulent statistics and structures in wall heated/cooled turbulent boundary layers.
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2021.12.02
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An article on our joint research activities with Kawasaki Heavy Industry on high-fidelity aircraft aerodynamic simulation using the supercomputer Fugaku was published in the Nikkei and Nikkei Business newspapers (in Japanese).
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2021.11.25
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Check out our new paper, "Wall modeling for large-eddy simulation on non-body-conforming Cartesian grids," published in Physical Review Fluids. This paper proposes an approach of wall-modeled large-eddy simulation (WMLES) on non-body-conforming Cartesian grids.
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2021.10.08
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Our Fugaku Aircraft Project under Program for Promoting Research on the Supercomputer Fugaku co-organizes the 5th HPC workshop (online) on Oct. 22, 2021. Recent results obtained by the Fugaku Aircraft Project will be presented.
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2021.10.08
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Check out our new paper, "Analysis and robust method for source-term modeling of vortex generator," published in Journal of Aircraft. This paper investigates the validity of the thin-airfoil theory for source-term modeling of vortex generators and proposes the modeling that improves the robustness and accuracy.
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2021.10.08
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Our new paper, "Visualization of large-scale high-fidelity LES data in aeronautics (in Japanese)," was published in the Journal of the Visualization Society of Japan. The large-scale data visualization under our Fugaku Aircraft Project using supercomputer Fugaku is presented.
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2021.10.02
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Kawai (Prof.) is invited to 5th Advance Simulation Seminar on Oct. 6, 2021 and give a seminar talk on large-eddy simulation of compressible flows.
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2021.09.30
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Congratulations to Maruyama (Undergraduate student) for receiving the JSASS Excellent Presentation Awards at 53rd JSASS fluid dynamics conference!
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2021.09.27
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Congratulations to Hirai (Ph.D. student) for receiving the JSPS Research Fellowships for Young Scientists (DC2)!
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2021.09.27
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Congratulations to Maruyama (Undergraduate student) for the Early Graduation and receiving the B.S.!
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2021.09.06
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DNS database of heated transcritical and unheated non-transcritical turbulent boundary layers at supercritical pressures by Kawai, Journal of Fluid Mechanics (2019) is now available at Flow Database.
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2021.07.05
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Kawai (Prof.) gives an open lecture on "Numerical simulation of fluid flows: next-generation predictive science and aircraft development" at the Tohoku University Open Campus 2021 on July 28th and 29th, 2021.
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2021.07.02
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Tamaki (Assis. Prof.), Asada (Proj. Assis. Prof.), Hirai (D2), Iwatani (M1), and Maruyama (B4) from our laboratory presented their works at the JSASS fluid dynamics conference 2021 (online)D
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2021.07.02
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Kawai (Prof.) was invited to the Society of Automotive Engineers of Japan, Inc. and gave a seminar talk on our recent study.
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2021.06.09
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Check out our new paper
"High-order accurate kinetic-energy and entropy preserving (KEEP) schemes on curvilinear grids" published in Journal of Computational Physics. The proposed high-order accurate KEEP schemes achieve very stable and non-dissipative computations by preserving the total kinetic energy and total entropy, even on a largely distorted computational grid.
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2021.05.25
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Welcome to three new undergraduate students! people in our group
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2021.04.12
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Check out our new paper
"A localized thickened flame model for simulations of flame propagation and autoignition under elevated pressure conditions" published in Proceedings of the Combustion Institute. This paper proposes a localized thickened flame (LTF) model to accurately predict flame propagation and autoignition using detailed chemical kinetics on a coarse mesh.
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2021.04.01
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Welcome to new faculty/staff member, Dr. Hirotaka Maeyama, and six new graduate students! people in our group
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2021.03.25
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Congratulations to Kamogawa (M2) for receiving the Tohoku University Chair of Department Award for the achievements during his Master course!
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2021.03.01
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Welcome to new faculty/staff member, Dr. Aya Aihara.
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2021.01.09
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Check out our new paper
"Preventing spurious pressure oscillations in split convective form discretization for compressible flows" published in Journal of Computational Physics. This paper addresses issues in split convective form discretization in terms of the physical property of the pressure equilibrium.
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2020.12.15
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Our review paper on "Large eddy simulation with modeled wall-stress: recent progress and future directions" published in 2016 was ranked in Top 1 in the Most Accessed Articles in 2019 Academic Year in the publications of JSME.
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2020.09.24
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Wall-resolved LES database of A-airfoil near stall condition at Re_c = 2.1E6 by Asada & Kawai, Physics of Fluids (2018) have been updated. Turbulence statistics in 2D x-y cross-view plane are available.
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2020.07.30
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Kawai (Prof.) has been selected to be named a Tohoku University Distinguished Researcher.
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2020.07.10
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Tamaki (Assis. Prof.) was invited to the LES colloquium and gave a seminar talk on our recent study on wall-modeled large-eddy simulations on non-body-conforming Cartesian grids: Analysis of the conservation laws.
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2020.07.07
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Check out our new paper
"Physics and modeling of trailing-edge stall phenomena for wall modeled large-eddy simulation" published in Physical Review Fluids.
Based on the analysis of the LES database (Asada & Kawai Phys. Fluids 30, 2018), this paper reveals the predictability of trailing-edge stall phenomena using wall-modeled LES.
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2020.06.01
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Welcome to three new undergraduate students! people in our group
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2020.04.01
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Welcome to new faculty/staff members, Tamaki (Assis. Prof.) and Asada (PD)! The new academic year began.
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2020.03.25
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Congratulations to Hayabe (B4) for receiving the Tohoku University Presidentfs Award for the achievements during his Bachelor course!
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2020.02.14
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Check out our new paper
"Turbulence modeling for turbulent boundary layers at supercritical pressure: A model for turbulent mass flux" published in Flow, Turbulence and Combustion.
Based on the analysis of the DNS database (Kawai J. Fluid Mech. 865, 2019), this paper proposed a RANS modeling for
turbulent boundary layers at supercritical pressure where large density fluctuations are induced by the pseudo-boiling phenomena.
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2020.01.30
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Check out our new paper
"A stable and non-dissipative kinetic energy and entropy preserving (KEEP) scheme for non-conforming block boundaries on Cartesian grids" published in Comput. & Fluids. We proposed the stable and non-dissipative KEEP scheme for compressible flows, which preserves the kinetic energy and entropy at non-conforming block boundaries in on hierarchical Cartesian grids.
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2020.01.24
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Kawai (Prof.) presented our work on spatiotemporal control of flame structures and modeling for reactive flow simulations at
Symposium on Aerodynamics in Aerospace.
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2020.01.15
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Our paper on "Large eddy simulation with modeled wall-stress: recent progress and future directions" published in 2016
was ranked in Top 1 in the Most Accessed Articles in 2018 Academic Year in the publications of JSME.
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2020.01.14
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Kuya (Assis. Prof.), Fukushima (PD), and Tamaki (PD) presented their works at
AIAA-SciTech2020 in Orlando, the United States.
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2019.12.20
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Our group has been extensively working on the high-fidelity DNS and LES studies of various turbulent flows, such as separated turbulent boundary layers,
shock-boundary layer interaction, transonic airfoil buffet, airfoil stall phenomena, turbulent boundary layers at supercritical pressures, etc., using
supercomputer K (10 Peta FLOPS computer).
To make full use of our DNS and LES database, the turbulence database have been made open at our Flow Database.
Currently, the wall-resolved LES database of A-airfoil near stall condition at Re_c = 2.1E6 by
Asada & Kawai, Physics of Fluids (2018) have been open.
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2019.12.13
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Kawai (Prof.) was invited to the JAXA Chofu Aerospace Center and gave a seminar talk on our recent study on high-fidelity LES for aircraft design.
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2019.11.29
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Kuya (Assis. Prof.), Tamaki (PD), Ishitsuka (M2), Ota (M2), Shima (M1), and Kamogawa (M1) from our laboratory presented their works at
the computational fluid dynamics conference at Hokkaido University, Sapporo, JapanD
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2019.11.27
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Fukushima (PD), Tamaki (PD), and Hirai (M2) from our laboratory presented their works at
APS-DFD2019 in Seattle, the United States.
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2019.11.21
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Prof. Ihme at Stanford University visited our laboratory and gave a seminar talk at the TU Next Seminar in Applied Mechanics and Computational Engineering (AMCE),
Center for Next Generation Aircraft Research, Tohoku University.
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2019.11.15
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Prof. Taira at UCLA visited our laboratory and gave a seminar talk at the TU Next Seminar in Applied Mechanics and Computational Engineering (AMCE),
Center for Next Generation Aircraft Research, Tohoku University.
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2019.11.01
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Kuya and Kawai recieved
JSASS best paper award in the division of numerical simulation at 51st JSASS fluid dynamics conference and
gave an award lecture at the JAXA Chofu Aerospace Center.
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2019.10.31
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Prof. Fujii at Tokyo University of Science (Professor Emeritus at JAXA) visited our laboratory and
gave a seminar talk at the TU Next Seminar in Applied Mechanics and Computational Engineering (AMCE),
Center for Next Generation Aircraft Research, Tohoku University.
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2019.08.30
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Prof. Pecnik at TU Delft stayed at Kawai Laboratory for two months. We have extensively worked on analyzing the DNS database
of heated and cooled turbulent boundary layers to understand the law of the wall.
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2019.08.01
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Kawai Laboratory newly takes charge of
the Aerodynamic Design Research Unit, at the Department of Aerospace Engineering, Tohoku University.
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2019.07.23
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Prof. Pecnik at TU Delft and Kawai visited
JAXA Chofu Aerospace Center and gave a seminar talk.
JAXA organizes facility tour for us to see the wind tunnels and supercomputer.
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2019.07.19
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Prof. Pecnik at TU Delft and Kawai visited
Prof. Suga's Heat Transfer Lab. at Osaka Prefecture University
and gave a seminar talk.
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2019.07.13
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Prof. Pecnik at TU Delft is visiting our laboratory with the support of the JSPS Invitation Fellowship for Research in Japan and
gave a seminar talk at the TU Next Seminar in Applied Mechanics and Computational Engineering (AMCE),
Center for Next Generation Aircraft Research, Tohoku University.
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2019.07.03
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Kuya(Assis. Prof.), Tamaki(PD), Hirai(M2), and Kamogawa(M1) from our laboratory presented their works at
the JSASS fluid dynamics conference at Waseda University, Tokyo, JapanD
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2019.06.12
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Check out our new papers
"A Kriging-based dynamic adaptive sampling method for uncertainty quantification" and
"A simple and cellwise high-order implicit discontinuous Galerkin scheme for unsteady turbulent flows"
Heated transcritical and unheated non-transcritical turbulent boundary layers at supercritical pressures
published in Trans. of JSASS.
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2019.04.02
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Welcome to 4 new graduate students! The new academic year began.
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2019.04.01
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Our research proposal,
"Physics and modeling of Reynolds number effects on separated turbulent boundary layers"
was awarded computational time under K-computer HPCI system research project by the RIKEN Advanced Institute for Computational Science.
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2019.03.27
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Congratulations to Mr. Kamogawa for receiving the Japan Society for Aeronautical and Space Sciences Student Award
for the achievements during his Bachelor course!
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2019.02.20
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Check out our new paper
Heated transcritical and unheated non-transcritical turbulent boundary layers at supercritical pressures
published in J. Fluid. Mech.
Fully-developed flat-plate turbulent boundary layers with heated and unheated isothermal walls
at supercritical pressures are studied by using direct numerical simulation.
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2019.01.25
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Our paper on "Large eddy simulation with modeled wall-stress: recent progress and future directions" published in 2016
was ranked in Top 1 in the Most Accessed Articles in 2017-2018 Academic Year in the publications of JSME.
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2019.01.23
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Check out our new paper
"Large-eddy simulation of compressible flows and its prospects for aerospace engineering"
(in Japanese) published in Nagare, Journal of Japan Society of Fluid Mechanics (Special Issue for the 50th Anniversary of the Japan Society of Fluid Mechanics).
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2019.01.08
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Five people from our laboratory present their works at
AIAA SciTech 2019, San Diego, U.S.
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2018.12.19
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Our proposal with Prof. Pecnik at TU Delft "Law of the wall and turbulence modeling for turbulent boundary layers at supercritical pressure"
receives
Invitation Fellowship for Research in Japan, Japan Society for the Promotion of Science. Prof. Pecnik is visiting us in July-August, 2019.
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2018.12.13
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Six people from our laboratory present at the computational fluid dynamics conference
in Tokyo near Tokyo Tower, Japan. Thanks for coming to our talks!
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2018.10.26
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Laboratory group photo was updated. Colored leaves are beautiful in this season.
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2018.10.11
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Check out our new paper
"On a robust and accurate localized artificial diffusivity scheme for the high-order flux-reconstruction method,"
published in J. Comput. Phys.
We propose shock-capturing LAD for high-order FR method to robust and accurate compressible flow simulations.
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2018.09.14
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Check out our new paper
"Kinetic energy and entropy preserving schemes for compressible flows by split convective forms,"
published in J. Comput. Phys..
We propose kinetic energy and entropy preserving schemes to achieve stable and non-dissipative compressible flow simulations.
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2018.08.10
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Check out our new paper "Large-eddy simulation of airfoil flow near stall condition at Reynolds number 2.1~10^6,"
published in Phys. Fluids.
This paper investigates an airfoil flow involving a turbulent transition and separations near the stall condition at a high Reynolds number
and provides the wall-resolved LES database for near-wall models in LES.
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2018.07.06
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Seven people from our laboratory present at the JSASS fluid dynamics conference in Miyazaki, Japan.
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2018.05.31
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Check out our new paper published in AIAA J. on
""Wall-modeled large-eddy simulation of transonic airfoil buffet at high Reynolds number."
This paper investigates the capability of wall-modeled LES to predict transonic buffet phenomena over the OAT15A supercritical airfoil at high Reynolds number.
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2018.04.02
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Welcome to Dr. Yoshiharu Tamaki and Seidai Watanabe. The new academic year began, and people in our group was updated.
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2018.03.27
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Congratulations to Asada for receiving PhD and Oikawa for receiving Master's degree.
Also, congratulations to 4 undergrad students for receiving Bachelor's degree.
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2018.03.27
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Congratulations to Dr. Asada for receiving the Tohoku University Presidentfs Award for the achievements during his PhD course.
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2018.03.16
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Check out our new paper published in Comput. Fluids on
"A quadrature simplification method for fast implicit discontinuous Galerkin schemes."
This paper proposes a methodology for fast implicit time integrations with high-order DG methods by assuming constant-flux Jacobians in each cell
and simplifying the quadrature involved in implicit time integration schemes.
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2018.03.13
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Check out our new paper published in J. Comput. Phys. on
"Structure-preserving operators for thermal-nonequilibrium hydrodynamics".
This paper proposes a structure-preserving scheme for the 1F2T hydrodynamic equations, with the aim of improving the reliability of compressible RHD simulations.
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2018.03.09
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Dr. Kawai gave a seminar talk on "DNS and RANS modeling of transcritical turbulent boundary layers at supercritical pressure" at TU Delft.
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2018.02.06
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Check out our new paper published in The Astrophysical J. on
"Study of the transition from MRI to magnetic turbulence via parasitic instability
by a high-order MHD simulation code."
The numerical method used in this study is based on our paper published from J. Comput. Phys. in 2013
("Divergence-free-preserving high-order schemes for magnetohydrodynamics)".
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