Development of Defensive Technology for Particle Ingestion

JAXA Supercomputer System Annual Report February 2025-January 2026

Report Number: R25EDA201D10

Subject Category: Aeronautical Technology

Responsible Representative: Takeshi Fujiwara, Aviation Technology Directorate, Aviation Safety Innovation Hub
Contact Information: Masaya Suzuki, Aviation Technology Directorate, Aviation Safety Innovation Hub(suzuki.masaya@jaxa.jp)
Members: Kazuhisa Amemiya, Kazuto Fukui, Junichi Kazawa, Joe Matsutani, Naruto Mita, Rintaro Nakajima, Yota Nakamura, Jukito Oka, Yuya Ohashi, Masaya Suzuki, Kenji Shimizu, Mutsuki Sugiyama, Sota Tamehiro, Mizuki Watanabe

Abstract

The atmosphere in which aircraft fly is not ideal, with various fine particles (volcanic ash, yellow sand, water droplets, etc.) floating in the air. If fine particles are present in the flight path of an aircraft, they will be sucked in by the jet engine, causing problems such as erosion, deposition, and icing. These phenomena reduce the performance and lifetime of the engine, and sometimes even lead to accidents, so adequate countermeasures are necessary. This project is developing technology to protect against the effects of fine particles.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

To develop programs in an equivalent computer environment for future large-scale calculations.

Achievements of the Year

We proceeded with merging, debugging and refactoring of programs that had been developed in a PC cluster environment.

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: MPI
Thread Parallelization Methods: OpenMP
Number of Processes: 4 - 12
Elapsed Time per Case: 45 Minute(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 0.01

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	525.01	0.00
TOKI-ST	57898.16	0.06
TOKI-GP	0.00	0.00
TOKI-XM	0.00	0.00
TOKI-LM	1427.78	0.11
TOKI-TST	119.12	0.00
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	10.00	0.02
/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	0.13	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)	49.58	0.03

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