Numerical Simulation Approaches to Evaluating the Electromagnetic Loads on the EAST Vacuum Vessel

Numerical simulation approaches are developed to compute the electromagnetic forces on the EAST vacuum vessel during major disruptions and vertical displacement events,with the halo current also considered.The finite element model built with ANSYS includes the vacuum vessel,the plasma facing components and their support structure,and the toroidal and poloidal field coils.The numerical methods are explained to convince of its validity.The eddy current induced by the magnetic flux variation and the conducting current caused by the halo current are also presented for discussion.The electromagnetic forces resulting from the numerical simulation are proven to be useful for structure design optimization.Similar methods can be applied in the upgrades of the EAST device.