Transport of magnetic flux in an arbitrary coordinate ALE code

We illustrate a new technique for computing the. time-evolution of magnetic flux on a generally nonorthogonal computational grid of a time-dependent, arbitrary Lagrangian-Eulerian magnetohydrodynamics (MHD) simulation code and apply this technique to some classical MHD test problems. For a nontrivial application, we demonstrate the power of this technique for the interesting problem of compact toroid translation between a pair of converging conical electrodes. (C) 1998 Academic Press.