High Fidelity Geometry and Meshing for RF Fusion Systems Simulations*

Accurate RF simulations of fusion systems like ITER require the definition of high fidelity analysis geometries that include detailed antenna and reactor wall representations. The analysis domains must also include the boundaries of coupling meshes (e.g., core plasma models). The ability to effectively control the mesh generation process is enhanced by the inclusion of specific physics geometry (e.g., the SOL) into the analysis geometry. This poster will describe a set of tools being developed to support the construction and subsequent meshing of the needed analysis geometry. The steps in the process include (i) fast defeaturing of un-needed details (e.g., mounting bolts) from antenna CAD models, (ii) defining desired physics model features using input data like EFIT, (iii) combining the antenna, reactor wall, physics and any coupling meshes into a single analysis model geometry, (iv) applying simple high level mesh control to topological entities in the analysis model, and (v) executing a fully automatic mesh generator that will construct well controlled curved meshes for use in high-order finite element simulations.