摘要： 通过对地下水数值模拟的研究分析，抽象出空间类层次结构，并提出了基于属性关系的宏观拓扑结构和基于同构或异构几何模型关系的微观拓扑结构。可变三角化算法的设计能够生成有效的有限元网格模型，为地下水建模奠定了基础；同时，三维空间拾取技术提供了一个友好的人机图形交互环境。

关键词: 有限元, 空间类层次结构, 宏观/微观拓扑结构, 3D拾取技术, 可变三角化算法

Abstract: Following the various complex condition of groundwater numerical simulation, a space class hierarchy is abstracted, and a novel approach to constructing a macro/micro-topology is also provided. The macro-topology is built based on the relation between attribute structures, while the micro-topology is for the relation between isomorphic or isomerous geometric models. An optional triangulation algorithm presented here can powerfully generate finite element meshes. The methods designed above can effectively construct groundwater modeling in 3D. In addition, a 3D picking tool has been developed in GSS software for a friendly graphic interface.

中图分类号: 

• TP391.4