Next generation jet engine technology – development of high efficiency compressor design tecnology and aerodynamic performance prediciton –

JAXA Supercomputer System Annual Report April 2020-March 2021

Report Number: R20EA0711

Subject Category: Aeronautical Technology

Responsible Representative: Tatsuya Ishii, Aeronautical Technology Directorate, Propulsion Research Unit
Contact Information: Junichi Kazawa, Aeronautical Technology Directorate, Propulsion Research Unit(kazawa.junichi@jaxa.jp)
Members: Junichi Kazawa, Takafumi Kanayama, Kenshi Yamashita

Abstract

We will develop aerodynamic performance improvement technology and high precision aerodynamic performance prediction technology for multistage-compressor assuming an increase in relative tip clearance, corresponding to a small core engine applied to an ultra-high bypass ratio engine.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

The number of cases of aerodynamic performance prediction of a multi-stage compressor will be very large for satisfactory results. So we can not be calculated in a realistic time using anything other than JSS.

Achievements of the Year

Verification analyses using rig test results were conducted with numerical techniques incorporatd into mixing plane to improve mass flow conservation in the computational domain. Numerical results with these techniques agreed with experimental data.

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: MPI
Thread Parallelization Methods: Automatic Parallelization
Number of Processes: 64 – 128
Elapsed Time per Case: 100 Hour(s)

Resources Used(JSS2)

Fraction of Usage in Total Resources*1(%): 0.56

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	2,368,071.22	0.45
SORA-PP	284,164.21	2.23
SORA-LM	98.10	0.06
SORA-TPP	0.00	0.00

File System Resources
File System Name	Storage Assigned (GiB)	Fraction of Usage*2(%)
/home	17.14	0.02
/data	11,248.37	0.22
/ltmp	3,510.98	0.30

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	2.73	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.

Resources Used(JSS3)

Fraction of Usage in Total Resources*1(%): 1.07