Collaborative work for aerodynamic optimization
JAXA Supercomputer System Annual Report April 2017-March 2018
Report Number: R17EA3211
Subject Category: Aeronautical Technology
- Responsible Representative: Takeshi Ito, Aeronautical Technology Directorate, Next Generation Aeronautical Innovation Hub Center
- Contact Information: Shigeru Kuchi-Ishi shigeruk@chofu.jaxa.jp
- Members: Shigeru Kuchiishi, Minoru Yoshimoto, Shinsuke Nishimura, Yukinori Morita, Takuya Ogura
Abstract
An aerodynamic optimization tool by using the unstructured CFD code FaSTAR is developed. As a collaborative work with an airfcraft industory, an overset grid function of FaSTAR-Move, a CFD tool for moving/deforming body analysis, is applied to an optimal arrangement of slat/flap for a three-dimensional high lift device configuration.
Reference URL
N/A
Reasons for using JSS2
Aerodynamic optimization using an evolutionary algorithm requires a number of high-fidelity and large-scaled computations (3D RANS analysis) and the use of a supercomputer is necessary.
Achievements of the Year
By setting an optimization problem for the slat arrangement of a three-dimensional high lift device configuration, an optimization calculation using the overset grid function of FSTAR-Move together with the response surface methodology was carried out. It was confirmed that the efficiency of the aircraft configuration design process can be improved not only by the reduction of grid generation time employing overset grid system, but also by the reduction of domain partition process for parallel computations.
Fig.1: Optimization for the slat arrangement of a three-dimensional high lift device.
Fig.2: Example of the overset grid around a slat.
Publications
N/A
Usage of JSS2
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 1600
- Elapsed Time per Case: 6.00 hours
Resources Used
Fraction of Usage in Total Resources*1(%): 0.01
Details
Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.
| System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
|---|---|---|
| SORA-MA | 15,086.58 | 0.00 |
| SORA-PP | 0.00 | 0.00 |
| SORA-LM | 0.00 | 0.00 |
| SORA-TPP | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 015.69 | 0.01 |
| /data | 10,503.48 | 0.19 |
| /ltmp | 3,210.14 | 0.24 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 0.26 | 0.01 |
*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