Research on the performance improvement of practical aero-engine fuel injector
JAXA Supercomputer System Annual Report April 2020-March 2021
Report Number: R20EBA30200
Subject Category: Aeronautical Technology
- Responsible Representative: Takashi Yamane, Aeronautical Technology Directorate, En-Core Pre-project team
- Contact Information: Kazuaki Matsuura, Japan Aerospace Exploration Agency, Aeronautical Technology Directorate, En-Core Project team(matsuura.kazuaki@jaxa.jp)
- Members: Kazuaki Matsuura, Mitsumasa Makida, Naoki Nakamura, Jun Iino, Huilai Zhang, Kinya Saito, Kunihiko Sakata, Harumi Toriyama, Takahiro Inagawa, Aya Yoshida
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
A preliminary numerical simulation for combustion oscillation in the combustor with a choked outlet was performed. Pressure oscillation at a single dominant frequency was observed. The r.m.s. values of the pressure oscillation on the central axis were nearly constant in a wide range of axial locations.
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 512
- Elapsed Time per Case: 119 Hour(s)
Resources Used(JSS2)
Fraction of Usage in Total Resources*1(%): 1.70
Details
Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.
System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
---|---|---|
SORA-MA | 10,025,652.16 | 1.90 |
SORA-PP | 11,250.51 | 0.09 |
SORA-LM | 0.00 | 0.00 |
SORA-TPP | 0.00 | 0.00 |
File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
---|---|---|
/home | 364.23 | 0.33 |
/data | 72,003.95 | 1.39 |
/ltmp | 11,814.93 | 1.01 |
Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
---|---|---|
J-SPACE | 0.10 | 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.
Resources Used(JSS3)
Fraction of Usage in Total Resources*1(%): 1.56
Details
Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.
System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
---|---|---|
TOKI-SORA | 8,060,150.54 | 1.73 |
TOKI-RURI | 64,742.23 | 0.37 |
TOKI-TRURI | 0.00 | 0.00 |
File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
---|---|---|
/home | 370.43 | 0.25 |
/data | 72,235.32 | 1.21 |
/ssd | 547.68 | 0.29 |
Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
---|---|---|
J-SPACE | 0.10 | 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.
JAXA Supercomputer System Annual Report April 2020-March 2021