Development of Aerodynamic Optimization Library: Harmonny
JAXA Supercomputer System Annual Report April 2018-March 2019
Report Number: R18EA3202
Subject Category: Aeronautical Technology
- Responsible Representative: Takashi Aoyama, Aeronautical Technology Directorate, Numerical Simulation Research Unit
- Contact Information: Shigeru Kuchiishi(kuchi-ishi.shigeru@jaxa.jp)
- Members: Shigeru Kuchiishi, Takashi Ishida, Atsushi Hashimoto, Masahiro Kanazaki, Kohji Suzuki , Takatoshi Nakayama, Minoru Yoshimoto, Shinsuke Nishimura, Kei Nakanishi, Yukinori Morita, Takuya Ogura, Kyohei Sawada, Kazufumi Uwatoko
Abstract
An aerodynamic optimization library “Harmonee,” which uses the unstructured CFD code FaSTAR, is develped and its validity and efficiency are examined. A Multi-Objective Evolutionary Algorithm (MOEA) is employed as an aerodynamic optimization method. This tool is aimed to enable the direct evolutionary computing to perform within a practical computational time by utilizing the high speed performance of FaSTAR. In the present project, basic programs are developed and validated using JSS2.
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 needs to use the supercomputer.
Achievements of the Year
For the evolutionary algorithm module of Harmonee, crossover algorithm and constraint treatment by the directed mating algorithm were improved from the viewpoint of accuracy and robustness. Harmonee was applied to a two-objective, two-constrained aerodynamic optimization problem for the NASA Common Research Model (CRM) and it was found that reasonable parato solutions can be obtained.
Fig.1: Two-objective, two-constrained aerodynamic optimization for the NASA Common Research Model (CRM)
Publications
N/A
Usage of JSS2
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: Automatic Parallelization
- Number of Processes: 128
- Elapsed Time per Case: 2 Hour(s)
Resources Used
Fraction of Usage in Total Resources*1(%): 0.08
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 | 271,500.66 | 0.03 |
| SORA-PP | 17,732.00 | 0.14 |
| SORA-LM | 0.00 | 0.00 |
| SORA-TPP | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 747.94 | 0.77 |
| /data | 56,723.65 | 1.00 |
| /ltmp | 9,601.20 | 0.82 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 0.32 | 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 2018-March 2019