Research of Plasma Simulation in Electric Propulsion Devices
JAXA Supercomputer System Annual Report February 2022-January 2023
Report Number: R22ECWU04
Subject Category: Cooperative Graduate School System
- Responsible Representative: Takashi Aoyama, Aviation Technology Directorate, Program Director
- Contact Information: Kiyoshi Kinefuchi, Department of Aerospace Engineering, Graduate School of Engineering, Nagoya University(kiyoshi.kinefuchi@mae.nagoya-u.ac.jp)
- Members: Fumito Takase, Ryohei Takagi
Abstract
The purpose of this research is to investigate the effect of the state of the lanthanum hexaboride insert responsible for thermal electron emission from the hollow cathode used as an electron source in electric propulsion on ionization instability (plume mode).
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
JSS3 was used to execute plasma simulation using Hybrid-PIC. The computational resources of JSS3 were required to investigate the influence of a variaty of parameters on the solution.
Achievements of the Year
The influences of the properties of the LaB6 insert, such as the insert work function and the insert surface temperature distribution, on the flow field of the hollow cathode was numerically investigated using Hybrid-PIC method. The results indicated that increasing work function results in growth of the ionization instability(plume mode). As for the surface temperature distribution, it was shown that the flow tends to be stable, namely “spot mode”, as the temperature of the downstream tip becomes higher.
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 12
- Elapsed Time per Case: 6 Hour(s)
JSS3 Resources Used
Fraction of Usage in Total Resources*1(%): 0.00
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 | 0.00 | 0.00 |
| TOKI-ST | 17245.55 | 0.02 |
| TOKI-GP | 0.00 | 0.00 |
| TOKI-XM | 0.00 | 0.00 |
| TOKI-LM | 0.00 | 0.00 |
| 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 | 780.00 | 0.71 |
| /data and /data2 | 150.00 | 0.00 |
| /ssd | 150.00 | 0.02 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 0.00 | 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.
ISV Software Licenses Used
| ISV Software Licenses Used(Hours) | Fraction of Usage*2(%) | |
|---|---|---|
| ISV Software Licenses(Total) | 0.00 | 0.00 |
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
JAXA Supercomputer System Annual Report February 2022-January 2023