Predictive Analysis of Toxic Gas Dispersion
JAXA Supercomputer System Annual Report February 2024-January 2025
Report Number: R24EEK10499
Subject Category: Space Technology
- Responsible Representative: Hiroaki Sakai, Space Transportation Technology Directorate, Kagoshima Space Center, Ground Safety and Security Group
- Contact Information: Keita Kanakubo(JAXA)(kaakubo.keita@jaxa.jp)
- Members: Keita Kanakubo
Abstract
To improve the accuracy of analysis assuming an accident at the time of a launch of a key launch vehicle. During the launch of a key launch vehicle, propellant leakage due to satellite drop, etc., is considered to cause the diffusion of gases harmful to the human body. The scope of the impact is evaluated and appropriate personnel control/notification and communication plans are made. By improving the accuracy of the analysis, we will examine whether it is possible to reduce the extent of the impact and contribute to the reduction of the impact on the area around the launch site.
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
The use of JAXA’s supercomputer satisfies the above needs and has the advantage that the trials can be repeated in JAXA’s in-house laboratory.
Achievements of the Year
Analysis of hazardous gas diffusion in the plains and its evaluation were conducted.
Tanegashima Island topography was read.
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: OpenMP
- Number of Processes: 1 – 2
- Elapsed Time per Case: 10 Minute(s)
JSS3 Resources Used
Fraction of Usage in Total Resources*1(%): 0.00
Details
Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.
| System Name | CPU Resources Used(Core x Hours) | Fraction of Usage*2(%) |
|---|---|---|
| TOKI-SORA | 0.00 | 0.00 |
| TOKI-ST | 619.36 | 0.00 |
| TOKI-GP | 0.00 | 0.00 |
| TOKI-XM | 0.00 | 0.00 |
| TOKI-LM | 177.68 | 0.01 |
| TOKI-TST | 1184.61 | 0.02 |
| TOKI-TGP | 0.00 | 0.00 |
| TOKI-TLM | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 0.00 | 0.00 |
| /data and /data2 | 0.00 | 0.00 |
| /ssd | 0.00 | 0.00 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 0.00 | 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.
ISV Software Licenses Used
| ISV Software Licenses Used(Hours) | Fraction of Usage*2(%) | |
|---|---|---|
| ISV Software Licenses(Total) | 23.02 | 0.02 |
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
JAXA Supercomputer System Annual Report February 2024-January 2025