Two-phase compressible MHD solver developed in OpenFOAM to simulate compression of magnetized targets by imploding liquid metal liners

Two-phase compressible MHD solver “mhdCompressibleInterFoam” has been developed in OpenFOAM to study compression of magnetic fields in vacuum and/or magnetized gas targets by imploding liquid metal liners. The primary goal is to simulate diffusion of magnetic field into the liner and how it affects liner dynamics in the regime of the FDP (Fusion Demonstration Plant) that is currently being designed by General Fusion.

                                                                                      

Code has been validated against axisymmetric annular Hartmann flow reference case (with and without a free surface) and also extensively verified against in-house 1D code for the cylindrical compression of the toroidal and poloidal magnetic fields in vacuum.  A more complex case for the compression of magnetized target initialized with a Grad-Shafranov equilibrium state in the cylindrical geometry has been compared to the results produced with VAC (Versatile  Advection Code).

                                                                                                       

Results obtained to date are encouraging and the newly developed solver appears to be robust and provides interesting and useful insight into dynamics of imploding liquid metal liners. In the poster we will discuss solver itself, verification cases and application to the problems of interest with regard to FDP.