本文へ移動

サイトナビゲーションへ移動

検索ボックスへ移動

サイドバーへ移動

ここは、本文エリアの先頭です。

Development of 3D CFD core-software of automotive engine combustion chamber

JAXA Supercomputer System Annual Report February 2021-January 2022

Report Number: R21EDA201N11

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: MIZOBUCHI Yasuhiro, Senior researcher, Aviation Technology Directrate, Aircraft Lifecycle Innovation Hub
  • Contact Information: MIZOBUCHI Yasuhiro, Japan Aerospace Exploration Agency, Aviation Technology Directrate(mizobuchi.yasuhiro@jaxa.jp)
  • Members: Hiroyuki Abe, Atsusi Fujino, Manabu Hisida, Ryohei Kirihara, Takuhito Kuwabara, Yasuhiro Mizobuchi, Taisuke Nambu, Daichi Obinata, Kei Shimura, Shogo Yasuda, Hiroki Yao

Abstract

Enhancement of CAE utilization in automotive engine research by developing an engine combustion simulation software that is sharable in Japan automotive research community.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

Massive-parallel large scale simulation, Large number of simulations fo software validation

Achievements of the Year

Computational time of firing simulation has been reduced to 1/2 by the concurrent execution of the dynamic AMR(Adaptive Mesh Refinement) around valves and the dyamic AMR around a piston. The figure shows the AMR block patterns and the flowfield in intake, fuel injection, flame propagation and exhaust timings where the AMR level around the piston is 2, and the maximum AMR level around the valves is 3.

Annual Reoprt Figures for 2021

Fig.1: Firing simulation by concurrent dynamic AMR around valves and piston.

 

Publications

– Invited Presentations

MIZOBUCHI Yasuhiro, “Combusiton analysis software HINOCA, past and future,” “EXA scale computing from K to Fugaku,” JSME CMD2021 forum, Sept. 23rd 2021.

Usage of JSS

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: OpenMP
  • Number of Processes: 1 – 1200
  • Elapsed Time per Case: 100 Hour(s)

JSS3 Resources Used

 

Fraction of Usage in Total Resources*1(%): 1.29

 

Details

Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.

Computational Resources
System Name CPU Resources Used
(Core x Hours)
Fraction of Usage*2(%)
TOKI-SORA 29472964.91 1.43
TOKI-ST 307631.14 0.38
TOKI-GP 0.00 0.00
TOKI-XM 128.23 0.09
TOKI-LM 133.46 0.01
TOKI-TST 0.00 0.00
TOKI-TGP 0.00 0.00
TOKI-TLM 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 1001.99 1.00
/data and /data2 523625.33 5.60
/ssd 6899.22 1.78

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 67.01 0.45

*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).

*2: Fraction of Usage:Percentage of usage relative to each resource used in one year.

 

ISV Software Licenses Used

ISV Software Licenses Resources
ISV Software Licenses Used
(Hours)
Fraction of Usage*2(%)
ISV Software Licenses
(Total)
466.04 0.33

*2: Fraction of Usage:Percentage of usage relative to each resource used in one year.

JAXA Supercomputer System Annual Report February 2021-January 2022