Application of High-Fidelity Aerodynamic Analysis to Multidisciplinary Design Optimization for Reusable Space Transportation System
JAXA Supercomputer System Annual Report February 2021-January 2022
Report Number: R21EACA48
Subject Category: JSS Inter-University Research
- Responsible Representative: Takahiro Fujikawa, Assistant Professor, Faculty of Science and Technology, Tokyo University of Science
- Contact Information: Takahiro Fujikawa, Faculty of Science and Technology, Tokyo University of Science(fujikawa.takahiro@rs.tus.ac.jp)
- Members: Takahiro Fujikawa, Koichi Yonemoto, Tsuyoshi Ohtsuki, Tomotaka Watanabe, Shintaro Tejika, Ayaka Yamazaki
Abstract
Strong interactions between vehicle and trajectory during the design of winged reusable space transportation systems have motivated the application of multidisciplinary design optimization methodologies. However, low-fidelity aerodynamic analysis methods such as an engineering-level panel code have been used in our previous research, which poses the issues of accuracy.
In this study, the theoretical and practical applicability of FaSTAR, a CFD code developed by JAXA, to the system optimization of suborbital space planes will be investigated. Aerodynamic characteristics of the obtained design solutions will be evaluated in detail by using JAXA FaSTAR as well.
Reference URL
Please refer to https://space-systems.me.noda.tus.ac.jp/en/research-en/system-optimization/ .
Reasons and benefits of using JAXA Supercomputer System
High-performance computing environments such as supercomputers are essential in high-fidelity design optimization of space transportation systems, since aerodynamic characterization of a variety of vehicle shapes is required for the wide range of Mach numbers and angles of attack. JAXA FaSTAR and its related software are suited to the present study due to their computational efficiency and automation capability. These advantages can be gained more by using the JAXA supercomputer system, for which they are tuned.
Achievements of the Year
In the fiscal year 2021, multi-fidelity surrogate models were developed in order to realize accurate aerodynamic characterization with reduced computational cost, and they were incorporated into the multidisciplinary design optimization framework of manned suborbital space planes. In addition, multi-fidelity optimization of supersonic airfoil was conducted toward the next step of implementing three-dimensional aerodynamic design including airfoil shape into multidisciplinary design optimization.
As a system analysis of a suborbital space plane combined with an expendable upper stage, aerodynamic calculations during the separation flight were also performed.
Publications
- Peer-reviewed papers
1) Shintaro TEJIKA, Takahiro FUJIKAWA, and Koichi YONEMOTO, Multi-Objective System Optimization of Suborbital Spaceplane by Multi-Fidelity Aerodynamic Analysis, Proceedings of 2021 Asia-Pacific International Symposium on Aerospace Technology, 2021.
2) Tsuyoshi OHTSUKI, Takahiro FUJIKAWA, and Koichi YONEMOTO, Separation Characteristics of a Two-Stage-to-Orbit Winged Rocket by Aerodynamic Interaction Analysis, Proceedings of 2021 Asia-Pacific International Symposium on Aerospace Technology, 2021.
3) Tomotaka WATANABE, Koichi YONEMOTO, Takahiro FUJIKAWA, and Ayaka YAMAZAKI, Multi-Objective Optimization of Highly Maneuverable Supersonic Airfoil Using Multi-Fidelity EGO, Proceedings of 2021 Asia-Pacific International Symposium on Aerospace Technology, 2021.
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: Automatic Parallelization
- Number of Processes: 120 - 160
- Elapsed Time per Case: 1 Hour(s)
JSS3 Resources Used
Fraction of Usage in Total Resources*1(%): 0.11
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 | 2549276.84 | 0.12 |
| TOKI-ST | 0.01 | 0.00 |
| TOKI-GP | 0.00 | 0.00 |
| TOKI-XM | 587.67 | 0.42 |
| 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 | 65.00 | 0.06 |
| /data and /data2 | 550.00 | 0.01 |
| /ssd | 650.00 | 0.17 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 0.00 | 0.00 |
*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 2021-January 2022