Prediction of harmful gas dispersion

JAXA Supercomputer System Annual Report February 2025-January 2026

Report Number: R25EEK10499

Subject Category: Space Technology

PDF (to be added)

Responsible Representative: Sakai Hiroaki, Manager, Ground Safety InsertHere Security Team
Contact Information: Kanakubo keita(kanakubo.keita@jaxa.jp)
Members: Keita Kanakubo

Abstract

To predict how far harmful gas reach when a rocket has ana accident with more accuracy.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

Conducting CFD in-house not only allows for preliminary design work but also helps improve the skills of our staff.

Achievements of the Year

No results were achieved this fiscal year because the person in charge was transferred to another department.

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: MPI
Thread Parallelization Methods: OpenMP
Number of Processes: 1 - 4
Elapsed Time per Case: 3 Hour(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.

Computational Resources
System Name	CPU Resources Used (Core x Hours)	Fraction of Usage*2(%)
TOKI-SORA	0.00	0.00
TOKI-ST	0.00	0.00
TOKI-GP	0.00	0.00
TOKI-XM	0.00	0.00
TOKI-LM	41.27	0.00
TOKI-TST	4970.06	0.08
TOKI-TGP	0.00	0.00
TOKI-TLM	0.00	0.00

File System Resources
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 Resources
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 Resources
	ISV Software Licenses Used (Hours)	Fraction of Usage*2(%)
ISV Software Licenses (Total)	260.75	0.18

*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.