Systematic improvement of build and comparison of aerodynamic models of aircraft
JAXA Supercomputer System Annual Report April 2020-March 2021
Report Number: R20EDA201N05
Subject Category: Aeronautical Technology
- Responsible Representative: Takashi Aoyama, Director, Numerical Simulation Research Unit, Aeronautical Technology Directorate
- Contact Information: Makoto Ueno, Numerical Simulation Research Unit, Aeronautical Technology Directorate (ueno.makoto@jaxa.jp)
- Members: Makoto Ueno, Yuko Ueno, Kento Yamada, Hiroya Toriida, Takahiro Uchiyama, Masaru Naruoka, Tetsujiro Ninomiya
Abstract
A research to realize efficient validation of numerical simulation using experimental data such as flight test and wind tunnel test data utilizing mathematical model.
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
It is necessary to perform CFD computation including flow around a whole aircraft because it requires highly parallelized computation. Additionally, the JSS2 was chosen because the FaSTAR CFD solver is optimized, as well.
Achievements of the Year
Computational fluid dynamics (CFD) analysis was performed to compare the aerodynamic characteristics estimated in the flight test of the business jet shape with the ground test results. Specifically, a large-scale CFD with varying Reynolds number, Mach number, airspeed angle, and stabilizer steering angle was conducted within the range including flight test conditions to make a quasi-static comparison between ground test and flight test. Made possible. In addition, using this CFD result, we are developing a tool for setting the angle of attack, speed, and altitude in flight to desired conditions.
Fig.1: An example output of the trim condition estimation tool.
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 25
- Elapsed Time per Case: 12.5 Hour(s)
Resources Used(JSS2)
Fraction of Usage in Total Resources*1(%): 1.57
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 | 9,223,562.00 | 1.75 |
| SORA-PP | 13,787.86 | 0.11 |
| SORA-LM | 0.00 | 0.00 |
| SORA-TPP | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 643.89 | 0.59 |
| /data | 103,458.50 | 2.00 |
| /ltmp | 5,335.55 | 0.45 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 2.40 | 0.08 |
*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.
Resources Used(JSS3)
Fraction of Usage in Total Resources*1(%): 1.01
Details
Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.
| System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
|---|---|---|
| TOKI-SORA | 5,144,727.60 | 1.11 |
| TOKI-RURI | 167.25 | 0.00 |
| TOKI-TRURI | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 650.44 | 0.45 |
| /data | 104,622.58 | 1.75 |
| /ssd | 273.58 | 0.14 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 2.40 | 0.08 |
*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 2020-March 2021