三维实体有限差分网络自动生成策略的研究

Study of Automatic 3D Solid Finite Difference Mesh Generation

计算机数值模拟技术是工程计算中的一个重要环节．应用这种技术对温度场、流场和应力场等进行模拟分析，可为工程设计提供可靠的依据，而网格刻分则是数值模拟前处理技术的重要组成部分．数值模拟常用的剖分网格有两类：一类是有限元网格，大量应用于固体力学、液体力学、传热和电磁学领域的有限元分析；另一类是有限差分网格，广泛应用于热场，溶质场，流场等的模拟计算[1]．本文介绍了研究开发的三维实体有限差分网格刻分系统，阐述了设计的三维实体几何图形描述语言的基本思想及其编译原理，给出了三维实体网格自动刻分的主要思想及计算机流程，实现了多材质自动识别、复杂实体的三维差分网格自动剖分．

An automatic 3D finite difference mesh subdivision system was developed., and a 3-D pattern detscription language was designed, The fundamental idea and compiling principle of the pattern description language were expounded. In addition, the corresponding ideas of automatic 3D finite difference mesh subdivision were explained and its computer flowchart was given. With the constructed program system, automatic multiple material meognition and 3D mesh generation of complex solid model can be realized.