Research on the performance improvement of practical aero-engine fuel injector
JAXA Supercomputer System Annual Report February 2023-January 2024
Report Number: R23EBA30200
Subject Category: Aeronautical Technology
- Responsible Representative: Takashi Yamane, Aeronautical Technology Directorate, En-Core Project team
- Contact Information: Kazuaki Matsuura, Japan Aerospace Exploration Agency, Aeronautical Technology Directorate, En-Core Project team(matsuura.kazuaki@jaxa.jp)
- Members: Kazuaki Matsuura, Jun Iino, Kinya Saito, Kunihiko Sakata, Aya Yoshida, Kodai Kato, Mitsumasa Makida, Naoki Nakamura
Abstract
Our study is focusing on the improvement of fuel injector performance. Numerical simulations on air-flow, atomization, fuel/air mixing, combustion, and thermal analysis on such injectors in realistic shapes are of our interest.
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
In order to analyze air-flow, atomization, fuel/air mixing, combustion, and thermal analysis of a realistic shape fuel nozzle precisely, we conduct the flamelet combustion analysis using large size of database, and the use of super computer is necessary.
Achievements of the Year
In order to avoid fuel coking in fuel circuits of a coaxially-staged lean-burn fuel injector, improvement of thermal-protection design and its numerical evaluation were carried out. An example of fluid/solid coupled heat transfer analysis of the fuel injector is presented in Fig.1, in which the environment between the simplified fun-duct inner wall and the combustor casing is also taken into account.

Fig.1: Example of fluid/solid coupled heat transfer analysis of the fuel injector, considering the environment between the simplified fun-duct inner wall and the combustor casing.
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 1024
- Elapsed Time per Case: 2584 Hour(s)
JSS3 Resources Used
Fraction of Usage in Total Resources*1(%): 2.52
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 | 68315750.01 | 3.09 |
TOKI-ST | 57542.15 | 0.06 |
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 Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
---|---|---|
/home | 235.83 | 0.20 |
/data and /data2 | 178382.50 | 1.10 |
/ssd | 0.00 | 0.00 |
Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
---|---|---|
J-SPACE | 0.09 | 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) | 926.93 | 0.42 |
*2: Fraction of Usage:Percentage of usage relative to each resource used in one year.
JAXA Supercomputer System Annual Report February 2023-January 2024