Numerical Analysis of aerodynamic characteristics on H3 launch vehicle
JAXA Supercomputer System Annual Report April 2018-March 2019
Report Number: R18EK2300
Subject Category: Space Technology
- Responsible Representative: Masashi Okada, H3 Project Manager, Space Technology Derectorate 1
- Contact Information: ikaida.hroshi@jaxa.jp(ikaida.hroshi@jaxa.jp)
- Members: Hiroshi Ikaida, Kazuhiro Imai, Fumihiro Itoo
Abstract
Develop a transportation system that achieves low cost and high performance in order to strengthen international competitiveness.
Reference URL
N/A
Reasons for using JSS2
The shortening of analysis time by the use of a supercomputer makes it possible to carry out feedback to system study timely, which greatly contributes to the improvement of design accuracy.
Achievements of the Year
An initial study was conducted to apply a fairing with a diameter of 5.4 m, and the feasibility was confirmed.
Fig.1: H3 model
Fig.2: Cp (M = 0.6 a=5deg)
Fig.3: Cp (M = 1.3 a=5deg)
Publications
N/A
Usage of JSS2
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: Automatic Parallelization
- Number of Processes: 480 – 960
- Elapsed Time per Case: 5 Hour(s)
Resources Used
Fraction of Usage in Total Resources*1(%): 0.21
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 | 1,852,488.80 | 0.23 |
| SORA-PP | 827.21 | 0.01 |
| SORA-LM | 63.76 | 0.03 |
| SORA-TPP | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 257.81 | 0.27 |
| /data | 10,234.20 | 0.18 |
| /ltmp | 4,947.92 | 0.42 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 0.50 | 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