JAXA Supercomputer System Annual Report April 2017-March 2018

Report Number: R17EA0711

Subject Category: Aeronautical Technology

PDF available here

• Responsible Representative: Toshiya Nakamura, Next Generation Aeronautical Innovation Hub Center
• Contact Information: Junichi Kazawa kazawa.junichi@jaxa.jp
• Members: Junichi Kazawa, Yuntae Lee, Takafumi Kanayama

Abstract

For the international joint development of jet engines, it aims to develop and demonstrate core engine technology with little experience in Japan. In order to achieve high aerodynamic performance of a compact size and a total pressure ratio of 20 or more, we designed a multi-stage axial compressor with mixed flow compressor applied in the final stage and confirmed its validity by numerical analyses.

Reference URL

Please refer to 'Green engine technology | ECAT - Environment-Conscious Aircraft Technology Program | Aeronautical Technology Directorate'.

Reasons for using JSS2

In multistage compressor analyses, the number of grid points is large. It is necessary to analyze many cases to obtain a performance curve. It is necessary to use supercomputers in order to produce results in a limited time period and feed back to the multistage compressor design.

Achievements of the Year

The aerodynamic performance was predicted by multi-stage steady-state analysis for the high pressure compressor with seven stage axial compressor and one mixed flow compressor designed by JAXA. Although there was a problem with aerodynamic performance in the initial design shape, we confirmed that it was improved by the improved design and confirmed the validity of the high pressure comressor design.

Fig.1: High Pressure Compressor (Designed by JAXA)

Fig.2: Improved design result (total pressure distribution)

Publications

N/A

Usage of JSS2

Computational Information

• Process Parallelization Methods: MPI
• Thread Parallelization Methods: OpenMP
• Number of Processes: 66 - 95
• Elapsed Time per Case: 5.50 hours

Resources Used

Fraction of Usage in Total Resources*1(%): 0.21

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 2017-March 2018