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

JAXA Supercomputer System Annual Report February 2022-January 2023

Report Number: R22EDA201N11

Subject Category: Aeronautical Technology

Responsible Representative: MizobuchiYasuhiro, Director, Aviation Technology Directrate, Aviation Lifecycle Innovation Hub
Contact Information: Taisuke Nambu, Aviation Technology Directorate, Aircraft Lifecycle Innovation Hub(nambu.taisuke@jaxa.jp)
Members: Hiroyuki Abe, Atsusi Fujino, Manabu Hisida, Takaaki Kishi, Ryohei Kirihara, Takuhito Kuwabara, Daiki Miyai, 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

In order to make HINOCA a more practical software, the following five themes have been set for this fiscal year to further improve its functions as a platform. “Improvement of conservation”, “Addition of geometry definition function”, “Addition of coupled calculation function”, “Addition of reaction function”, “Improvement of I/O function”.

Fig.1: Analysis results of spray combustion using advanced reaction calculation methods

Fig.2: Differences in flame propagation calculation results with and without flame quenching model (left: without flame quenching model, right: with flame quenching model)

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: MPI
Thread Parallelization Methods: OpenMP
Number of Processes: 1 – 2048
Elapsed Time per Case: 168 Hour(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 0.69

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	17608305.61	0.77
TOKI-ST	298269.50	0.30
TOKI-GP	0.00	0.00
TOKI-XM	39.06	0.02
TOKI-LM	3591.01	0.24
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	435.60	0.39
/data and /data2	488164.70	3.76
/ssd	3090.87	0.43

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	40.88	0.18

*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)	218.30	0.15

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