Boulder, Colorado – 12 March 2015:
Tech-X researchers, working together with researchers at Front Range Scientific Computing, Inc. and the Department of Computer Science at the University of Illinois at Urbana-Champaign, have collaborated to create new approaches to solving multi-scale plasma electromagnetics problems. "Fully Implicit Ultrascale Physics Solvers and Application to Ion Source Modeling" reports the first steeps in this collaboration, the implementation of these approaches in the Tech-X USim fluid plasma modeling tool, and describes the application of USim to modeling H- ion sources for the spallation neutron source at ORNL. Look forward to using these capabilities in a future release of USim.
Above: Magnetic field structure for the Spallation Neutron Source's H-Ion Source created with USim 2.0 using a combination of Jacobian-Free Newton-Krylov solvers and finite volume discretizations on unstructured meshes. The source antenna geometry is generated parametrically in STL file format, and then the unstructured computational mesh is generated by the Trelis mesh tool from csimsoft. The mesh is imported into USim 2.0 using the built-in ExodusII reader.