CAD-based Monte Carlo automatic modeling method based on primitive solid. (January 2016)

• Record Type: Journal Article
• Authors: Wang, Dong; Song, Jing; Yu, Shengpeng; Long, Pengcheng; Wang, Yongliang
• Is Part Of: Annals of nuclear energy. Volume 87:Part 2(2016:Jan.)
• Page Start: 162
• Page End: 166
• Publication Date: 2016-01
• Subjects: Primitive solid -- CAD -- Monte Carlo -- SuperMC -- Automatic modeling; Nuclear energy -- Periodicals; Nuclear engineering -- Periodicals; 621.4805
• DOI: 10.1016/j.anucene.2015.07.041
• Languages: English
• ISSNs: 0306-4549

Abstract

Highlights: We develop a method which bi-convert between CAD model and primitive solid. This method was improved from convert method between CAD model and half space. This method was test by ITER model and validated the correctness and efficiency. This method was integrated in SuperMC which could model for SuperMC and Geant4. Abstract: Monte Carlo method has been widely used in nuclear design and analysis, where geometries are described with primitive solids. However, it is time consuming and error prone to describe a primitive solid geometry, especially for a complicated model. To reuse the abundant existed CAD models and conveniently model with CAD modeling tools, an automatic modeling method for accurate prompt modeling between CAD model and primitive solid is needed. An automatic modeling method for Monte Carlo geometry described by primitive solid was developed which could bi-convert between CAD model and Monte Carlo geometry represented by primitive solids. While converting from CAD model to primitive solid model, the CAD model was decomposed into several convex solid sets, and then corresponding primitive solids were generated and exported. While converting from primitive solid model to the CAD model, the basic primitive solids were created and related operation was done. This method was integrated in the SuperMC and was benchmarked with ITER benchmark model. The correctness and efficiency of this method were demonstrated.