Numerical analysis on atomization and spray combustion
JAXA Supercomputer System Annual Report April 2019-March 2020
Report Number: R19EA2150
Subject Category: Aeronautical Technology
- Responsible Representative: Tatsuya Ishii, Propulsion Research Unit, Aeronautical Technology Directorate
- Contact Information: Kazuaki Matsuura, Japan Aerospace Exploration Agency, Aeronautical Technology Directorate, Propulsion Research Unit(matsuura.kazuaki@jaxa.jp)
- Members: Kazuaki Matsuura, Naoki Nakamura, Mitsumasa Makida, Huilai Zhang, Jun Iino, Kinya Saito
Abstract
A numerical study is performed to clarify phenomena on atomization and spray combustion.
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
The atomization phenomenon requires a high calculation load, and the use of super computer is necessary.
Achievements of the Year
The numerical simulation of a planer prefilming air-blast atomaization was conducted. Due to the poor grid resolution, it was turned out that the breakup phenomenon of the ligaments to droplets could not be captured adequately. Based on these numerical simulation results, next numerical simulation will be conducted with finer grid size.
Publications
N/A
Usage of JSS2
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: OpenMP
- Number of Processes: 96 – 768
- Elapsed Time per Case: 1000 Hour(s)
Resources Used
Fraction of Usage in Total Resources*1(%): 1.15
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 | 10,423,016.00 | 1.27 |
SORA-PP | 2,046.18 | 0.01 |
SORA-LM | 0.00 | 0.00 |
SORA-TPP | 0.00 | 0.00 |
File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
---|---|---|
/home | 325.29 | 0.27 |
/data | 26,633.14 | 0.46 |
/ltmp | 2,752.98 | 0.23 |
Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
---|---|---|
J-SPACE | 0.11 | 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.
JAXA Supercomputer System Annual Report April 2019-March 2020