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Research of coupled analysis of motion and aerodynamics

JAXA Supercomputer System Annual Report April 2017-March 2018

Report Number: R17EA3210

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: Takeshi Ito, Aeronautical Technology Directorate, Next Generation Aeronautical Innovation Hub Center
  • Contact Information: Takashi Ishida ishida.takashi@jaxa.jp
  • Members: Atsushi Hashimoto, Takashi Ishida, Hideaki Sugawara, Keiji Ueshima, Minoru Yoshimoto, Takuya Ogura, Shinsuke Nishimura, Yukinori Morita, Kazuhiro Imai, Shigeru Kuchiishi

Abstract

In this research, we have extended FaSTAR-code to be able to handle coupled analysis of motion and aerodynamics and conducted a store-separation analysis for the validation.

Reference URL

N/A

Reasons for using JSS2

Computer for large-scale unsteady flow simulation

Achievements of the Year

In this year, we have reduced the memory cost and accelerated the computational speed of FaSTAR-Move to enhance the user’s convenience. As a result, the unsteady flow simulation of store-separation analysis with 10M grid points was finished within one-day.

Annual Reoprt Figures for 2017

Fig.1: Computational grid of store-separation analysis

 

Annual Reoprt Figures for 2017

Fig.2: Comparison of the memory performance

 

Publications

■ Presentations

1)Keiji Ueshima, et al., “Development of FaSTAR-Move for flow analysis around moving/deforming bodies”, 49th Fluid Dynamics Conference/35nd Aerospace Numerical Simulation Symposium, Tokyo, 2017

2)Keiji Ueshima, et al., “Improvement of FaSTAR-Move capability towards practical use”, 55th Aircraft Symposium, Shimane, 2017

Usage of JSS2

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: N/A
  • Number of Processes: 64 – 2048
  • Elapsed Time per Case: 20.00 hours

Resources Used

 

Fraction of Usage in Total Resources*1(%): 1.45

 

Details

Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.

Computational Resources
System Name Amount of Core Time
(core x hours)
Fraction of Usage*2(%)
SORA-MA 11,678,000.75 1.54
SORA-PP 61,313.68 0.77
SORA-LM 12,511.32 6.44
SORA-TPP 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 121.34 0.08
/data 23,151.11 0.43
/ltmp 4,072.77 0.31

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 0.52 0.02

*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.

JAXA Supercomputer System Annual Report April 2017-March 2018