Development of improved numerical tools for Certification by Analysis(CbA)
JAXA Supercomputer System Annual Report February 2023-January 2024
Report Number: R23EDA201G22
Subject Category: Aeronautical Technology
- Responsible Representative: Kazuyuki Nakakita, Aviation Technology Directorate, Aircraft Lifecycle Innovation Hub
- Contact Information: Andrea Sansica(sansica.andrea@jaxa.jp)
- Members: Atsushi Hashimoto, Kenji Hayashi, Yuki Ide, Takashi Ishida, Masashi Kanamori, David Lusher, Tomoaki Matsuzaki, Yoimi Kojima, Yosuke Sugioka, Andrea Sansica, Kosuke Uchida, Takahiro Yamamoto, Markus Zauner
Abstract
High-accuracy simulations for stall and buffet are needed during the aircraft design. However, since the simulation cost is very high, we want to develop computation methodologies that aim at high-accuracy results with low computational cost. Hybrid RANS/LES methods (Embedded LES, ELES) have been implemented in FaSTAR and validated for different flow configurations.
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
For stall and buffet analysis, it is necessary to perform calculations on 3D complex geometries. Achieving high accuracy requires a large amount of computing power, so it is necessary to use a JAXA supercomputer.
Achievements of the Year
We applied ELES method to transonic flow over a full-aircraft geometry (named CRM) and low-speed flow over a three-element airfoil (named 30P35N) for assessing the capabilities of complex geometry simulations. The results indicate that the ELES method can conduct high-fidelity simulations for complex geometries at moderate computational cost.
Publications
– Oral Presentations
1) Yoimi Kojima, Yoshiyasu Ichikawa, Shunsuke Koike, “Scale Resolving Simulation of Vortex Generator Flows over a Three-Elemental Airfoil Flap,” AIAA Aviation Forum 2023.
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 576 – 9216
- Elapsed Time per Case: 144 Hour(s)
JSS3 Resources Used
Fraction of Usage in Total Resources*1(%): 3.80
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 | 101433585.65 | 4.58 |
TOKI-ST | 228237.63 | 0.25 |
TOKI-GP | 8742.50 | 0.11 |
TOKI-XM | 5914.04 | 3.24 |
TOKI-LM | 43782.22 | 3.34 |
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 | 1553.74 | 1.29 |
/data and /data2 | 172187.67 | 1.06 |
/ssd | 35010.60 | 3.31 |
Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
---|---|---|
J-SPACE | 32.17 | 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 Used(Hours) | Fraction of Usage*2(%) | |
---|---|---|
ISV Software Licenses(Total) | 2077.79 | 0.94 |
*2: Fraction of Usage:Percentage of usage relative to each resource used in one year.
JAXA Supercomputer System Annual Report February 2023-January 2024