For the design of experiments in fusion reactors, tools are used to simulate the Scrape-Off Layer (SOL) plasma coupled to the plasma core and the first wall. The grid shape for mapping to axisymmetric reactor follows the magnetic equilibrium created by the plasma, and the toroidal and poloidal magnets. The magnets control the shape of the core and the scraping of the edge plasma onto the divertor. The shape and density of the simulation grid have a significant influence on the simulation time and the quality of the results.
This work presents the development of algorithms of a meshing plugin for creation of quadrilateral elements from a triangular grid, aligning with the magnetic equilibrium and thus better describe the governing equations of the plasma. The developed plugin enables the topological optimization of the grid for different reactor configurations and is an extension of the TIARA meshing process with different densities in the regions of interest. The results of simulations in the SOLPS-ITER environment are presented.
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