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Numerical Study on Combustible Flow in Supersonic Flight Engines and Rocket Engines

JAXA Supercomputer System Annual Report April 2020-March 2021

Report Number: R20EACA01

Subject Category: JSS Inter-University Research

PDF available here

  • Responsible Representative: Nobuyuki Tsuboi, Professor, Department of Mechanical and Control Engineering, Kyushu Institute of Technology
  • Contact Information: Nobuyuki Tsuboi(tsuboi@mech.kyutech.ac.jp)
  • Members: Nobuyuki Tsuboi, Kouhei Ozawa, Takahide Araki, Toshihiro Iwasa, Nicolas H. Jourdaine, Kodai Shimomura, Taishi Amano, Kanta Iwasaki, Nobuhiro Kurita, Naomi Takeshima, Darshan Manjunath, Tsuyoshi Okura, Go Inoue

Abstract

Fundamental studies on nozzles and combustors for Japanese rocket engines and supersonic engines are performed by using numerical simulations.

Reference URL

Please refer to '反応流体力学研究室/研究テーマ'.

Reasons and benefits of using JAXA Supercomputer System

Academic and applicative researches on fluid dynamics and combustion mechanism, and development of effective numerical methods are carried out in order to develop Japanese rocket engines and supersonic engines.

Achievements of the Year

To validate the analysis code for the jet mixing in the supersonic crossflow, ILES/RANS hybrid simulation on the round helium jet is performed. As a result, the shock waves and vortex structure near the jet exit are observed, as shown in Figs. 1 and 2. We confirmed that the analysis code can simulate the jet mixing in the supersonic flow.

Annual Reoprt Figures for 2020

Fig.1: Instantaneous Mach number contours.

 

Annual Reoprt Figures for 2020

Fig.2: Instantaneous static temperature contours.

 

Publications

N/A

Usage of JSS

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: OpenMP
  • Number of Processes: 8
  • Elapsed Time per Case: 840 Hour(s)

Resources Used(JSS2)

 

Fraction of Usage in Total Resources*1(%): 0.02

 

Details

Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.

Computational Resources
System Name Amount of Core Time
(core x hours)
Fraction of Usage*2(%)
SORA-MA 38,876.80 0.01
SORA-PP 0.00 0.00
SORA-LM 0.00 0.00
SORA-TPP 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 123.98 0.11
/data 1,239.78 0.02
/ltmp 25,390.64 2.16

 

Archiver Resources
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.

 

Resources Used(JSS3)

 

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 Amount of Core Time
(core x hours)
Fraction of Usage*2(%)
TOKI-SORA 0.00 0.00
TOKI-RURI 0.00 0.00
TOKI-TRURI 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 38.15 0.03
/data 381.47 0.01
/ssd 381.47 0.20

 

Archiver Resources
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.

JAXA Supercomputer System Annual Report April 2020-March 2021


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Language / 言語

"Annual Report" available

How to use JSS3

To use JSS3, please refer to "How to use JSS3" page .

Location

Chofu Aerospace Center
7-44-1 Jindaiji Higashi-machi, Chofu-shi, Tokyo