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

JAXA Supercomputer System Annual Report February 2023-January 2024

Report Number: R23EA2120

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: ISHII Tatsuya, Director, Aviation Technology Directrate, Aviation Environmental Sustainability Innovation Hub
  • Contact Information: Taisuke Nambu, Aviation Technology Directorate, Aviation Environmental Sustainability Innovation Hub(nambu.taisuke@jaxa.jp)
  • Members: Takashi Aoyama, 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-AE 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

To validate the detailed analysis by DES/LES in FaSTAR-Move-AE, we conducted analyses of a linear cascade with cooling air holes , as well as DES/LES analysis of a centrifugal compressor including complex shapes equivalent to actual machinery. It was confirmed that analysis with reasonable accuracy is possible for the linear cascade, however, in the analysis of the centrifugal compressor, significant flow rate oscillations not observed in the experiments were occurring, becoming a future challenge for analysis.

Annual Reoprt Figures for 2023

Fig.1: The analyzed turget: linear cascade with cooling holes

 

Annual Reoprt Figures for 2023

Fig.2: An example of analysis results using DES/LES

 

Publications

– Non peer-reviewed papers

Improvement of Advection Term Analysis Scheme for Aerodynamic Analysis of Blade Rows using Unstructured Grids, 2023 annual meeting of Gas turbine society of Japan

Usage of JSS

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: N/A
  • Number of Processes: 1 – 2048
  • Elapsed Time per Case: 480 Hour(s)

JSS3 Resources Used

 

Fraction of Usage in Total Resources*1(%): 1.09

 

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 29503491.36 1.33
TOKI-ST 11059.09 0.01
TOKI-GP 0.00 0.00
TOKI-XM 0.00 0.00
TOKI-LM 8521.04 0.65
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 387.23 0.32
/data and /data2 78975.57 0.49
/ssd 2516.78 0.24

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 22.56 0.08

*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)
329.32 0.15

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

JAXA Supercomputer System Annual Report February 2023-January 2024