A geometry modeling system for ray tracing or particle transport Monte Carlo simulation

作     者：Popescu, LM 

作者机构：Natl Inst R&D Environm Environm Radioact Lab Bucharest 77703 Romania 

出 版 物：《COMPUTER PHYSICS COMMUNICATIONS》 (计算机物理学通讯)

年 卷 期：2003年第150卷第1期

页      面：21-30页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：Monte Carlo particle transport geometry modeling boundary representation robust algorithms 

摘      要：The principles of a geometry modeling system for ray tracing or Monte Carlo particle transport simulation are presented. The model uses the boundary representation of volumes and was developed using object oriented programming. The surface is adopted as the basic element in the model. Complex structures are described using the derived concept of compound surfaces. Particle tracking exceptions caused by floating point rounding errors are discussed and robust algorithms that use geometrical reasoning to address these problems are presented. (C) 2002 Elsevier Science B.V. All rights reserved.