Improvement of numerical analysis for internal flow with complicated configuration inside aero-engine

JAXA Supercomputer System Annual Report February 2021-January 2022

Report Number: R21EA2120

Subject Category: Aeronautical Technology

Responsible Representative: AOYAMA Takashi, Director, Aviation Technology Directrate, Aircraft Lifecycle Innovation Hub
Contact Information: Taisuke Nambu, Aviation Technology Directorate, Aviation Environmental Sustainability Innovation Hub(nambu.taisuke@jaxa.jp)
Members: Shunji Enomoto, Atsushi Hashimoto, Kenji Hayashi, Takashi Ishida, Masatoshi Kanayama, Junichi Kazawa, Takahisa Kohno, Mitsumasa Makida, Taisuke Nambu, Hiroki Ugajin, Kanako Yasue

Abstract

Unstructured-grid flow solver FaSTAR-Move are applied to aero-engine analysis with complicated configuration. Through the calculation, these programs are tested and investigated for the deficiency and future issue for improvement of accuracy.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

For large scale computations in the future, programs should be tested under the same computational environment.

Achievements of the Year

In order to validate the complex shape analysis function of FaSTAR-Move, analyses of an axial turbinethe with colling holes and a centrifugal compressor are conducted. It is confirmed that the function is appropriate.

Fig.1: Analysis result of axial flow compressor (stage 37) by mixing plane method: Cp distribution.

Fig.2: Analysis result of axial flow compressor (stage 37) by mixing plane method: Relation of Total pressure ratio and mass flow rate at 100%, 90%, 70% rotation speeds.

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: MPI
Thread Parallelization Methods: N/A
Number of Processes: 4 – 1024
Elapsed Time per Case: 72 Hour(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 0.20

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	4442536.43	0.22
TOKI-ST	48502.61	0.06
TOKI-GP	0.00	0.00
TOKI-XM	0.00	0.00
TOKI-LM	1655.40	0.12
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	684.49	0.68
/data and /data2	96924.40	1.04
/ssd	4068.37	1.05

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	30.91	0.21

*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)	945.16	0.66

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