Collaborative research : advancement of unsteady flow simulation tequnique
JAXA Supercomputer System Annual Report April 2018-March 2019
Report Number: R18EA3210
Subject Category: Aeronautical Technology
- 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.
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.
| 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 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 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