The simulation of mode coupling during ELM crash by using BOUT++
The edge localized mode (ELM), which poses potential threats to divertor plates and first wall, is critical to understand in magnetic confinement fusion devices such as tokamaks. The BOUT++ framework serves as one of the most widely used models for ELM simulations. This study investigates mode-coupl...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2025-06-01
|
| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0270211 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | The edge localized mode (ELM), which poses potential threats to divertor plates and first wall, is critical to understand in magnetic confinement fusion devices such as tokamaks. The BOUT++ framework serves as one of the most widely used models for ELM simulations. This study investigates mode-coupling effects during ELM crashes through simulations employing different torus cases within BOUT++. Furthermore, using a three-wave coupling method, it examines the evolution of the dominant toroidal modes during ELM crashes. A key finding reveals that the mode that obtains the most energy will be the dominant mode in the subsequent period. In addition, by applying the three-wave coupling method in a 1/3 torus, the research analyzes energy transfer between low-n and high-n modes during the first ELM crash. The low-n mode (n = 3) is found to decrease ELM size, while the high-n modes increase ELM size in this simulation. |
|---|---|
| ISSN: | 2158-3226 |