Rchr
J-GLOBAL ID：202001004635983754   Update date: Feb. 01, 2024

Asahi Yuuichi

Asahi Yuuichi
Research theme for competitive and other funds  (3)：
  • 2023 - 2026 深層学習による都市汚染物質拡散のアンサンブル即時予報の実現
  • 2022 - 2026 Real-time wind digital twin with 1-meter resolution using GPU supercomputer
  • 2020 - 2022 Analyzing the phase-space dynamics of 5D distribution functions using the dimensionality reduction technique
Papers (12)：
  • Hasegawa Yuta, Onodera Naoyuki, Asahi Yuichi, Ina Takuya, Imamura Toshiyuki*, Idomura Yasuhiro. Continuous data assimilation of large eddy simulation by lattice Boltzmann method and local ensemble transform Kalman filter (LBM-LETKF). Fluid Dynamics Research. 2023. 55. 6. 065501\_1-065501\_25
  • Asahi Yuichi, Onodera Naoyuki, Hasegawa Yuta, Shimokawabe Takashi*, Shiba Hayato*, Idomura Yasuhiro. CityTransformer; A Transformer-based model for contaminant dispersion prediction in a realistic urban area. Boundary-Layer Meteorology. 2023. 186. 3. 34-692
  • Shinya Maeyama, Tomo-Hiko Watanabe, Motoki Nakata, Masanori Nunami, Yuuichi Asahi, Akihiro Ishizawa. Multi-scale turbulence simulation suggesting improvement of electron heated plasma confinement. Nature Communications. 2022. 13. 1
  • Asahi Yuichi, Padioleau T.*, Latu G.*, Bigot J.*, Grandgirard V.*, Obrejan K.*. Performance portable Vlasov code with C++ parallel algorithm. Proceedings of 2022 International Workshop on Performance, Portability, and Productivity in HPC (P3HPC) (Internet). 2022. 68-80
  • Hasegawa Yuta, Imamura Toshiyuki*, Ina Takuya, Onodera Naoyuki, Asahi Yuichi, Idomura Yasuhiro. GPU optimization of lattice Boltzmann method with local ensemble transform Kalman filter. Proceedings of 13th Workshop on Latest Advances in Scalable Algorithms for Large-Scale Heterogeneous Systems (ScalAH22) (Internet). 2022. 10-17
ｍore...
MISC (11)：
  • Onodera Naoyuki, Idomura Yasuhiro, Hasegawa Yuta, Asahi Yuichi, Inagaki Atsushi*, Shimose Kenichi*, Hirano Kohin*. Parameter optimization for urban wind simulation using ensemble Kalman filter. Keisan Kogaku Koenkai Rombunshu (CD-ROM). 2023. 28. 4
  • Hasegawa Yuta, Onodera Naoyuki, Asahi Yuichi, Idomura Yasuhiro. Data assimilation of three-dimensional turbulent flow using lattice Boltzmann method and local ensemble transform Kalman filter (LBM-LETKF). Dai-36-Kai Suchi Ryutai Rikigaku Shimpojiumu Koen Rombunshu (Internet). 2022. 5
  • Asahi Yuichi, Padioleau T.*, Latu G.*, Bigot J.*, Grandgirard V.*, Obrejan K.*. Performance portability with C++ parallel algorithm. Dai-36-Kai Suchi Ryutai Rikigaku Shimpojiumu Koen Rombunshu (Internet). 2022. 8
  • Asahi Yuichi, Onodera Naoyuki, Hasegawa Yuta, Shimokawabe Takashi*, Shiba Hayato*, Idomura Yasuhiro. Performance measurement of an urban wind simulation code with the Locally Mesh-Refined Lattice Boltzmann Method over NVIDIA and AMD GPUs. Keisan Kogaku Koenkai Rombunshu (CD-ROM). 2022. 27. 5
  • Hasegawa Yuta, Onodera Naoyuki, Asahi Yuichi, Idomura Yasuhiro. GPU implementation of local ensemble transform Kalman filter (LETKF) with two-dimensional lattice Boltzmann method. Keisan Kogaku Koenkai Rombunshu (CD-ROM). 2022. 27. 4
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Lectures and oral presentations  (31)：
  • Large-eddy simulation of metropolitan Tokyo using locally mesh-refined lattice Boltzmann method
    (第37回数値流体力学シンポジウム)
  • Choice of state vector in lattice Boltzmann method with local ensemble transform Kalman filter
    (第37回数値流体力学シンポジウム)
  • Performance portability of Ensemble Kalman Filter using C++ senders/receivers
    (2023 Open Accelerated Computing Summit (OACS))
  • Generating observation guided ensembles for data assimilation with denosing diffusion probabilistic model
    (40th International Conference on Machine Learning (ICML 2023))
  • Development of data assimilation methods and observation systems for a wind digital twin in urban areas
    (JHPCN: 学際大規模情報基盤共同利用・共同研究拠点第15回シンポジウム)
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