Effect of plasma motion in disruption on the electromagnetic behavior of a vacuum vessel

An efficient modeling of fine air-gaps in tokamak in-vessel components for electromagnetic analyses

“…In tokamaks, disruption-induced EM loads overwhelm other mechanical loads, such as gravity, seismic and thermo-hydraulic ones. Thus, estimating disruption-induced EM loads is an essential part of the design process of aforementioned major mechanical components of tokamaks, including ITER [4][5][6].…”

“…Some commercially available FEM tools are often beneficial to relatively large-scale analyses, in practical point of view, to implement a numerical model based on the drawings of design model. Due to the presence of thick shield/breeding blankets, the design of a reactor-grade plasma device in the future, as much as ITER, will prefer solid mesh FEM tools to any shell model [6][7][8] which describes induced current solving set of Maxwell equations [7,8] or coupled circuit equation matrix on 2D surfaces [9], in spite the shell is likely to be applicable to the design of present-day tokamaks due to the small width of conducting structures compared with characteristic dimension of a device. In addition, the commercial software such as ANSYS-EM TM [10] also can be applied to an integrated analysis of EM loads and ensuing mechanical or thermo-hydraulic loads.…”