Study of the Effect of Boundary Layer Ingestion (BLI) on Aircraft Propulsion / Distributed Propulsion Technology with Superconducting Motors
JAXA Supercomputer System Annual Report February 2025-January 2026
Report Number: R25EDA201P55
Subject Category: Aeronautical Technology
- Responsible Representative: Atsushi Kanda, Aviation Technology Directorate, Aviation Environmental Sustainability Innovation Hub
- Contact Information: Junichi Kazawa, Aeronautical Technology Directorate, Aviation Environmental Sustainability Innovation Hub(kazawa.junichi@jaxa.jp)
- Members: Miyuki Aoki, Yu Fukuda, Junichi Kazawa, Kenta Kawano, Takafumi Kanayama, Keiichi Okai
Abstract
To understand the aerodynamic characteristics of the fan under inlet conditions that simulate boundary layer ingestion (BLI).
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
Because a unsteady analyses of the full annular fan are required, the calculations become large-scale and the analyses cannot be performed without JSS3.
Achievements of the Year
The aerodynamic characteristics of the fan were analyzed under inlet conditions simulating boundary layer ingestion (BLI). The results confirmed that BLI causes a decrease in efficiency at the point of maximum efficiency and a reduction in the operating range.
Fig.1: Comparison of fan aerodynamic performance with and without BLI
Fig.2: Flow field around fan rotor blades under BLI condition (Total Pressure)
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 384
- Elapsed Time per Case: 120 Hour(s)
JSS3 Resources Used
Fraction of Usage in Total Resources*1(%): 0.59
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 | 11935768.44 | 0.54 |
| TOKI-ST | 59593.15 | 0.06 |
| TOKI-GP | 0.00 | 0.00 |
| TOKI-XM | 0.00 | 0.00 |
| TOKI-LM | 314481.89 | 23.69 |
| TOKI-TST | 0.00 | 0.00 |
| TOKI-TGP | 0.00 | 0.00 |
| TOKI-TLM | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 1024.00 | 1.64 |
| /data and /data2 | 102400.00 | 0.67 |
| /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) | 7616.64 | 5.34 |
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
JAXA Supercomputer System Annual Report February 2025-January 2026