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Systematic improvement of build and comparison of aerodynamic models of aircraft

JAXA Supercomputer System Annual Report April 2018-March 2019

Report Number: R18EDA201N05

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: Makoto Ueno, Aeronautical Technology Directorate, Numerical Simulation Research Unit
  • Contact Information: Makoto Ueno, Aeronautical Technology Directorate, Numerical Simulation Research Unit(ueno.makoto@jaxa.jp)
  • Members: Makoto Ueno, Hiroya Toriida, Takahiro Uchiyama, Kanako Yasue, Kenji Hayashi, Takashi Ishida, Fumitake Kuroda, Yuko Ueno

Abstract

A research to realize efficient validation of numerical simulation using experimental data such as flight test and wind tunnel test data utilizing mathematical model.

Reference URL

N/A

Reasons for using JSS2

To estimate viscosity and compressiblity effects on airplane aerodynamics by numerical simulation to make comparisons with experimental data.

Achievements of the Year

To compare flight test results with ground test, such as wind tunnel testing and computational fluid dynamics (CFD), CFD analysis was performed. It includes Reynolds number effect confirmation and support sting effect estimation for wind tunnel testing.

Although possiblity of shock wave relocation due to Reynolds number variation was worried, it appeared only in a few cases at high transonic Mach number and high angle of attack. The amount of shock wave relocation is at most 10% of the chord length in most cases. (Figures are not presented because the results are not public at this moment.)

Publications

N/A

Usage of JSS2

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: N/A
  • Number of Processes: 25
  • Elapsed Time per Case: 12.5 Hour(s)

Resources Used

 

Fraction of Usage in Total Resources*1(%): 1.01

 

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 9,044,164.87 1.11
SORA-PP 5,513.42 0.04
SORA-LM 135.01 0.06
SORA-TPP 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)		 Fraction of Usage*2(%)
/home 530.91 0.55
/data 69,145.47 1.22
/ltmp 4,512.22 0.39

 

Archiver Resources
Archiver Name Storage Used
(TiB)		 Fraction of Usage*2(%)
J-SPACE 1.33 0.05

*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 2018-March 2019