Fluid Simulation of Pressure Collapse

Abstract: In this talk, the resistive reduced MHD simulations of

pedestal collapse are presented with the focus on a role of nonlinear

mode coupling. Previously, It was shown that neighboring ballooning

fluctuations can produce tearing-parity via the mode coupling. When

magnetic perturbation (MP) is externally applied, MP may mediate

the nonlinear interaction and change the nonlinear dynamics.