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Collaborative research : advancement of unsteady flow simulation tequnique

JAXA Supercomputer System Annual Report April 2018-March 2019

Report Number: R18EA3210

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: Takashi Aoyama, Aeronautical Technology Directorate, Numerical Simulation Research Unit
  • Contact Information: Takashi Ishida, Aeronautical Technology Directorate, Numerical Simulation Research Unit(ishida.takashi@jaxa.jp)
  • Members: Atsushi Hashimoto, Takashi Ishida, Hideaki Sugawara, Keiji Ueshima, Minoru Yoshimoto, Takuya Ogura, Shinsuke Nishimura, Yukinori Morita, Kazuhiro Imai, Kei Nakanishi, Shigeru Kuchiishi

Abstract

The research on verification and functional improvement of FaSTAR/FaSTAR-Move is conducted for the purpose of the improvement of unsteady flow simulation technology.

Reference URL

N/A

Reasons for using JSS2

JSS2 is used to accelerate the computational time for the verification of unsteady flow simulations.

Achievements of the Year

In this year, parallelization of pre-processing, unsteady data output, result data mapping, periodic boundary condition were implemented for the functional improvement and verified through the unsteady simulations of transonic buffet, intake, store-separation, and rotating blade.

Annual Reoprt Figures for 2018

Fig.1: Example of result data mapping function

 

Publications

N/A

Usage of JSS2

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: OpenMP
  • Number of Processes: 128 – 2048
  • Elapsed Time per Case: 72 Hour(s)

Resources Used

 

Fraction of Usage in Total Resources*1(%): 0.37

 

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 2,165,018.36 0.27
SORA-PP 187,105.00 1.50
SORA-LM 4,345.16 2.03
SORA-TPP 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)		 Fraction of Usage*2(%)
/home 254.47 0.26
/data 27,405.35 0.48
/ltmp 3,698.42 0.32

 

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 2018-March 2019