JAXA Supercomputer System Annual Report April 2018-March 2019

Report Number: R18EDA201N07

Subject Category: Aeronautical Technology

PDF available here

• Responsible Representative: Takashi Aoyama, Aeronautical Technology Directorate, Numerical Simulation Research Unit
• Contact Information: Shigeru Kuchiishi(shigeruk@chofu.jaxa.jp)
• Members: Shigeru Kuchiishi, Kohji Suzuki , Kanako Yasue, Shinya Watanabe

Abstract

Unsteady CFD analysis will be performed in order to detect the starting point of buffet phnomena utilizing data mining techniques.

Reference URL

N/A

Reasons for using JSS2

A large-scale parallel computer such as JSS2 is indispensable for large-scale 3D NS analysis to acquire unsteady numerical simulations.

Achievements of the Year

Zonal DES (ZDES) Analysis for several angle of attack conditions have been performed (Fig.1 and 2). Data mining techniques for detecting places that might effect to the shock oscillation have been developed using obtained ZDES results.

Fig.1: Buffet on-set bounday determined by CLrms

Fig.2(video): ZDES results for OAT15A type airfoil

Publications

N/A

Usage of JSS2

Computational Information

• Process Parallelization Methods: MPI
• Thread Parallelization Methods: N/A
• Number of Processes: 512
• Elapsed Time per Case: 120 Hour(s)

Resources Used

Fraction of Usage in Total Resources*1(%): 0.50

Details

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

*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