Numerical analysis for Turbopumps
JAXA Supercomputer System Annual Report April 2018-March 2019
Report Number: R18EK2305
Subject Category: Space Technology
- Responsible Representative: Masashi Okada, Project manager, H3 Project Team
- Contact Information: Yohei Ogawa(ogawa.yohhei@jaxa.jp)
- Members: Hideyo Negishi, Satoshi Ukai, Yohei Ogawa, Mizuho Aotsuka
Abstract
Design evaluation using numerical simulation is carried out for technical issues of the LE-9 engine turbo pump.
Reference URL
N/A
Reasons for using JSS2
In order to carry out large-scale numerical analysis of multiple cases in a short period of time.
Achievements of the Year
Especially, with regard to the issue of turbine flutter stability, occurrence conditions of flutter instability were identified by large-scale numerical analysis using JSS2. And the findings were reflected in design changes of the turbo pump.
Publications
– Non peer-reviewed papers
(1) Ogawa, Y., et al., “The latest Development Status of LE-9 Engine Turbopumps, ” AIAA Propulsion and Energy Forum, Cincinnati, Ohio, AIAA Paper 2018-4550, July 9-11, 2018.
Usage of JSS2
Computational Information
- Process Parallelization Methods: XPFortran
- Thread Parallelization Methods: OpenMP
- Number of Processes: 20 – 960
- Elapsed Time per Case: 500 Hour(s)
Resources Used
Fraction of Usage in Total Resources*1(%): 4.58
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 | 42,789,398.36 | 5.24 |
| SORA-PP | 13,829.28 | 0.11 |
| SORA-LM | 0.00 | 0.00 |
| SORA-TPP | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 584.36 | 0.60 |
| /data | 15,222.89 | 0.27 |
| /ltmp | 2,393.54 | 0.20 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 0.10 | 0.00 |
*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