Research on Advanced High-efficiency Engine Design Technology

JAXA Supercomputer System Annual Report February 2025-January 2026

Report Number: R25EDA201C56

Subject Category: Aeronautical Technology

Responsible Representative: Kenichiro Nagai, Aeronautical Technology Directorate, Aviation Environmental Sustainability Innovation Hub
Contact Information: Shunji Enomoto(enomoto.shunji@jaxa.jp)
Members: Shunji Enomoto, Keisuke Ohira, Dongyoun Kwak, Junichi Oki

Abstract

To develop advanced, highly efficient engine systems that improve environmental performance, as well as core technologies that reduce fuel consumption and noise.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

In research and development of elemental and system technologies for advanced engines that will be applied to future aircraft and achieve high environmental performance, it is necessary to (1) understand the flowfield around the engine, (2) evaluate the performance and optimal design the elemental technologies, and therefore CFD analysis using JSS is essential on design and evaluation with high fidelity.

Achievements of the Year

RANS analysis was performed on an open rotor engine configuration to analyze the breakdown of drag component in the rotationla direction (torgue). A a results, it was found that pressure drag is more dominant than friction drag. Then, pressure drag reduction technologies that can be applied to open rotors and is effective in reducing fuel consumption was selected.

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: MPI
Thread Parallelization Methods: N/A
Number of Processes: 960 - 1440
Elapsed Time per Case: 40000 Second(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	178385.83	0.01
TOKI-ST	0.00	0.00
TOKI-GP	0.00	0.00
TOKI-XM	0.00	0.00
TOKI-LM	0.00	0.00
TOKI-TST	0.00	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	1024.00	1.64
/data and /data2	102400.00	0.67
/ssd	30720.00	1.87

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	18.31	0.06

*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)	0.00	0.00

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