Development and application of multiphase flow solver for moving object using Cartesian grid
JAXA Supercomputer System Annual Report April 2018-March 2019
Report Number: R18EACA10
Subject Category: JSS2 Inter-University Research
- Responsible Representative: Shun Takahashi, Tokai Univercity
- Contact Information: Shun Takahashi, Tokai Univercity(takahasi@tokai-u.jp)
- Members: Shun Takahashi, Taku Nonomura
Abstract
The particulate flow is solved by the direct numerical simualtion using Euler-Euler approarch method. The objective is to investigate the interaction between the flow and particles and to develop the particulate model for the large scale compressible multiphase flow simulation.
Reference URL
N/A
Reasons for using JSS2
The particulate flow becomes expensive in order to investigate the interaction between the flow and particles using Cartesian grid and the immersed boundary method. Also, the number of the time integrations becomes large due to obtain the equilibrium state of the particulate flow.
Achievements of the Year
The interaction between the flow and particles was investigated by direct numerical simulation of the supersonic and low Reynolds number flow around the two particles using the immersed boundary method.
Fig.1: Density distributions in supersonic flows around two particles; a) in-line, b) side-by-side
Publications
N/A
Usage of JSS2
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: OpenMP
- Number of Processes: 128
- Elapsed Time per Case: 140 Hour(s)
Resources Used
Fraction of Usage in Total Resources*1(%): 0.27
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 | 2,444,788.60 | 0.30 |
| SORA-PP | 0.00 | 0.00 |
| SORA-LM | 0.00 | 0.00 |
| SORA-TPP | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 37.59 | 0.04 |
| /data | 10,340.08 | 0.18 |
| /ltmp | 2,068.02 | 0.18 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 14.06 | 0.49 |
*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