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
- 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.
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.
| 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 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 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 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