On development of aircraft noise control method based on resolvent analysis

JAXA Supercomputer System Annual Report February 2024-January 2025

Report Number: R24ECMP77

Subject Category: Competitive Funding

Responsible Representative: Kazuyuki Nakakita, Aeronarutical Technology Directorate, Fundamental research unit
Contact Information: Yoimi Kojima(kojima.yoimi@jaxa.jp)
Members: Yoimi Kojima

Abstract

This study aims to develop an efficient method for total temperature suppression using the resolvent analysis method, a technique for analyzing the linear response characteristics of flow. By leveraging resolvent analysis, the goal is to shorten the aircraft noise reduction process, which has traditionally required extensive trial and error.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

In resolvent analysis, it is necessary to perform eigenvalue or singular value decomposition of extremely large matrices, on the order of 50 million by 50 million, making the use of supercomputers essential.

Achievements of the Year

Software was developed to generate the linearized Navier-Stokes operator required for executing the resolvent analysis. In addition, a program to perform the resolvent analysis was created and its functionality was verified. By utilizing the JSS3 supercomputer, it became possible to carry out resolvent analysis on large-scale data.

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: MPI
Thread Parallelization Methods: OpenMP
Number of Processes: 48 - 3072
Elapsed Time per Case: 336 Hour(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 0.13

Details

Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.

Computational Resources
System Name	CPU Resources Used (Core x Hours)	Fraction of Usage*2(%)
TOKI-SORA	3457072.16	0.16
TOKI-ST	0.00	0.00
TOKI-GP	0.00	0.00
TOKI-XM	0.00	0.00
TOKI-LM	0.00	0.00
TOKI-TST	0.00	0.00
TOKI-TGP	0.00	0.00
TOKI-TLM	0.00	0.00

File System Resources
File System Name	Storage Assigned (GiB)	Fraction of Usage*2(%)
/home	23.33	0.02
/data and /data2	4866.67	0.02
/ssd	239.05	0.01

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	17.59	0.06

*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.

ISV Software Licenses Used

ISV Software Licenses Resources
	ISV Software Licenses Used (Hours)	Fraction of Usage*2(%)
ISV Software Licenses (Total)	0.00	0.00

*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.