Mesh Generation Methods for Deterministic Radiation Transport Codes

摘要

There is a growing disparity between the geometries which can be represented in CAD models, and those which can be represented in radiation transport codes. Since modern designs of components often involve complex shapes, it is necessary to bridge this gap in representation to preserve the accuracy of shielding and criticality calculations. Since a large class of radiation transport codes can read Cartesian meshes, one solution to this problem is to convert complex CAD geometries into a Cartesian mesh with the materials in each voxel mixed together uniformly. For this method to produce accurate transport results, the volume fraction of each material in each voxel must be accurately determined.