Comparative study between MHD simulation codes for nonlinear dynamics of the ELMs in KSTAR H-mode plasma

Abstract

The verification between the three different MHD simulation codes is an important process to cross-check ELM dynamics from each code prior to comparative study with the experimental observations. The simulation results from individual codes using the same plasma equilibrium are qualitatively in good agreement with the observation. The JOREK and BOUT++ simulation results suggest that the low-n mode and the lower-n mode have a connection with the triggering of ELM-crash. In future study, the initial conditions of each code will be adjusted for fair comparison and the hypothesis on the ELM-crash triggering will be validated.