本文へ移動

サイトナビゲーションへ移動

検索ボックスへ移動

サイドバーへ移動

ここは、本文エリアの先頭です。

Research and development of CFD-based flight simulator

JAXA Supercomputer System Annual Report February 2023-January 2024

Report Number: R23EDA201N15

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: Kazuyuki Nakakita, Aeronautical Technology Direcrate, LC hub.
  • Contact Information: Yoimi Kojima(kojima.yoimi@jaxa.jp)
  • Members: Atsushi Hashimoto, Kenji Hayashi, Seigo Koga, Kazuyuki Nakakita, Yoimi Kojima

Abstract

In aircraft certification, fight-test risk-reduction and cost-reduction are issues. CbA (Certification by Analysis), which replaces flight tests with analysis, is being studied globally in order to promote safe and efficient certification. Therefore, we are constructing a CFD-based flight simulator for the purpose of replacing and complementing flight tests.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

In order to build a CFD-based flight simulator, it is necessary to execute a large number of calculation cases with different Mach numbers, angles of attack, rudder angles, etc., and create an aerodynamic database.

Achievements of the Year

We conducted CFD simulation by FaSTAR to validate solver and improve the accuracy of the aerodynamic data base for the simulator. Various combinations of flap deflection angle, grid density, and flight conbination brings us pieces of insight that help us to improve the prediction accuracy of the piching moment in flight condition. This FY result contribute to accurate CFD-based flight simulator.

Publications

N/A

Usage of JSS

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: N/A
  • Number of Processes: 512
  • Elapsed Time per Case: 144 Hour(s)

JSS3 Resources Used

 

Fraction of Usage in Total Resources*1(%): 1.88

 

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 50724713.27 2.29
TOKI-ST 33631.71 0.04
TOKI-GP 0.00 0.00
TOKI-XM 168.01 0.09
TOKI-LM 1908.56 0.15
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 1270.12 1.05
/data and /data2 122715.19 0.76
/ssd 31106.15 2.94

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 34.51 0.12

*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)
1812.39 0.82

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

JAXA Supercomputer System Annual Report February 2023-January 2024