Implicit Resistive MHD Simulations on a Tetrahedral Mesh
Author: George J. Marklin
Requested Type: Poster Only
Submitted: 2006-12-14 14:45:07
Co-authors: Thomas R. Jarboe
Contact Info:
Plasma Science and Innovation Center
University of Washington
Seattle, WA 98195
USA
Abstract Text:
Last year at this meeting we described a method for doing resistive MHD simulations with insulated conductor boundary conditions and circuit interactions. The method was implemented on a tetrahedral mesh, finite volume code called M4. The method works well for static diffusion but is numerically unstable for mobile plasma. It has since been modeled on Comsol Multiphysics (formerly called Femlab), a commercial software product for fully implicit finite element solution of partial differential equations on a tetrahedral mesh. Simulations of highly resistive RFP formation show that the method is numerically stable when solved implicitly. But Comsol Multiphysics appears to be too slow (as of version 3.3) to be of practical use at realistic plasma parameters and for more complex experimental geometries. This poster will show the RFP simulation results and describe how the M4 code is being upgraded to run fully implicitly and in parallel. Simulations of HIT-SI spheromak sustainment, starting from a driven Taylor state and integrating through one cycle of AC helicity injection will be presented if time permits.
Characterization: E10
Comments:
Please place with other PSI-Center posters in any order.
