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Improvement of numerical analysis for internal flow with complicated configuration inside aero-engine.

JAXA Supercomputer System Annual Report April 2017-March 2018

Report Number: R17EA2120

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: Takashi Yamane, Aeronautical Technology Directorate, Propulsion Research Unit
  • Contact Information: Mitsumasa Makida makida.mitsumasa@jaxa.jp
  • Members: Mitsumasa Makida, Shunji Enomoto, Junichi Kazawa, Atsushi Hashimoto, Takashi Ishida, Shigeru Kuchiishi, Taisuke Nambu(JAXA), Hiroki Ugajin, Tanaka Uhi, Yani Naoki(IHI)

Abstract

Unstructured-grid flow solver FaSTAR and grid generator BOXFUN are applied to aero-engine elements with complicated configuration (such as linear and rotating cascades). Through the calculation, these programs are tested and investigated for the deficiency and future issue for improvement of accuracy.

Reference URL

Please refer to ‘Development of the world’s fastest CFD tool and contributing to society | Numerical simulation technology | Aeronautical Technology Directorate‘.

Reasons for using JSS2

Aiming to do large scale calculation in the future, programs should be tested under the same computational environment.

Achievements of the Year

Numerical calculation by FaSTAR was applied to the T106A cascade with which a lot of CFD results and experimental measurement data are published. Fig.1 shows result of calculation without turbulence model, and we can see unsteady result which shows the transition process from laminar flow boundary layer separation to turbulent flow. (Inlet angle: 45 degree, Reynolds number based on chord length: 60E4, Mach number: 0.4)

Annual Reoprt Figures for 2017

Fig.1: Mach number distribution of T106A cascade flow

 

Publications

N/A

Usage of JSS2

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: Automatic Parallelizatio
  • Number of Processes: 512
  • Elapsed Time per Case: 10.00 hours

Resources Used

 

Fraction of Usage in Total Resources*1(%): 0.00

 

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 11,856.12 0.00
SORA-PP 387.31 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 045.94 0.03
/data 11,358.09 0.21
/ltmp 3,162.08 0.24

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 9.54 0.09

*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 2017-March 2018