3D Mesh Generation in Geocomputing
3D Mesh Generation in Geocomputing
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DOI：
10.1007/978-3-540-85879-9_2
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
H. Xing;Wenhui Yu;Ji Zhang
中科院分区：
文献类型：
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作者：
H. Xing;Wenhui Yu;Ji Zhang
网格剖分在工程计算中有着广泛的应用，但在地学界似乎是一个相对较新的技术。本文首先列举了工程计算中网格生成的相关进展，然后讨论了将其应用或扩展到地球科学计算（geocomputing）中的可能性。对于地球科学来说，可用的输入数据通常是3D空间中的大量点数据，而不是工业设计师提供的具有合理公差的定义形状和尺寸，因此与工程案例有很大不同。针对这类地学数据，本文简要介绍了几何建模、六面体和四面体网格生成等方面的相关进展，重点介绍了将相关方法应用或扩展到生成地学三维六面体/四面体网格的方法，并通过不同的实际应用实例进行了说明。例如用于裂缝主导的储集层系统、南澳相互作用的断层系统和没有或具有简化/实际板块边界的整个地球模型的全六面体形状网格生成;以及用于多层非均匀地层的全四面体形状网格生成。
Mesh generation has been widely used in engineering computing, but seems to be relatively “new” for geoscience community. This paper firstly lists such relevant progresses of mesh generation for the engineering computing and then discusses the possibility for applying/extending them to geoscience computing (ie geocomputing). For geoscience, the available input data are normally a large quantity of point data in the 3D space rather than the defined shapes and dimensions with reasonable tolerances provided by the industrial designers, thus quite different from the engineering cases. To deal with such geoscience data, this paper briefly introduces the relevant progresses on geometrical modeling, hexahedral and tetrahedral shaped mesh generation, and then focuses on the applying and/or extending the related methods to generate all hexahedral/tetrahedral shaped meshes in 3D for geoscience purposes, which is described through the different practical application examples, such as the all-hexahedral shaped mesh generation for a fracture dominated reservoir system, the South Australia interacting fault system and the entire earth model without or with the simplified/practical plate boundaries; and all-tetrahedral shaped mesh generation for a multi-layer un-