Cooperative Research: Research on Dynamic Stabiilty Analysis
JAXA Supercomputer System Annual Report February 2022-January 2023
Report Number: R22EA3210
Subject Category: Aeronautical Technology
- Responsible Representative: Atsushi Hashimoto, Aeronautical Technology Directorate, Numerical Simulation Research Unit
- Contact Information: Yoimi Kojima(kojima.yoimi@jaxa.jp)
- Members: Atsushi Hashimoto, Takashi Ishida, Keiji Ueshima, Minoru Yoshimoto, Ichiro Maeda, Yoshihiro Tachibana, Takashi Aoyama, Kanako Yasue, Hitoshi Arizono, Yoimi Kojima
Abstract
The aircraft dynamic stability is an essential information for evaluating the flight stability and designing the aircraft maneuver control systems. But there are limitations for the textbook-based estimations and the wind tunnel tests and, therefore, the CFD-based stability analysis is expected to dissolve the limitations. Our objective in this research is to apply FaSTAR, a high-speed solver for compressible flow developed in JAXA, for predicting the dynamic derivatives to validate the accuracy of the code.
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
The prediction for the dynamic derivatives requires quite a bit of numerical simulations, both for steady and unsteady states. The vast computational resources provided by JSS allow us to enhance the process and make it much faster than we do them on desktop computers.
Achievements of the Year
We conducted unsteady simulations over a Standard Dynamics Model (SDM) for predicting the dynamic derivatives. We employed Spalart-Allmaras based DDES (Deleyed Detached Eddy Simulation) method for simulating the turbulent flows over the model. We compared the derivatives with experimental results and confirmed that the simulation could provide accurate predictions for aircraft’s dynamic stability.
Fig.1(video): Flow visualization over the model
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 64 – 128
- Elapsed Time per Case: 144 Hour(s)
JSS3 Resources Used
Fraction of Usage in Total Resources*1(%): 0.01
Details
Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.
System Name | CPU Resources Used(Core x Hours) | Fraction of Usage*2(%) |
---|---|---|
TOKI-SORA | 336470.19 | 0.01 |
TOKI-ST | 80.66 | 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 Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
---|---|---|
/home | 433.07 | 0.39 |
/data and /data2 | 40896.42 | 0.32 |
/ssd | 1405.56 | 0.19 |
Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
---|---|---|
J-SPACE | 39.24 | 0.17 |
*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 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.
JAXA Supercomputer System Annual Report February 2022-January 2023