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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

PDF available here

  • 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.

Annual Reoprt Figures for 2023

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.

Computational Resources
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 Resources
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 Resources
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 Resources
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