generation of anisotropic mesh by ellipse packing over an unbounded     domain

CORC > 软件研究所 > 软件所图书馆 > 期刊论文

	generation of anisotropic mesh by ellipse packing over an unbounded domain
	Lo SH ; Wang WX
刊名	ENGINEERING WITH COMPUTERS
	2005
卷号	20 期号:4 页码:372-383
关键词	unbounded domain anisotropy mesh generation advancing front ellipse packing parametric surface
ISSN号	0177-0667
学科主题	Computer Science, Interdisciplinary Applications; Engineering, Mechanical
收录类别	SCI ; ACM ; EI
语种	英语
公开日期	2011-07-28
附注	With the advance of the finite element method, general fluid dynamic and traffic flow problems with arbitrary boundary definition over an unbounded domain are tackled. This paper describes an algorithm for the generation of anisotropic mesh of variable element size over an unbounded 2D domain by using the advancing front ellipse packing technique. Unlike the conventional frontal method, the procedure does not start from the object boundary but starts from a convenient point within an open domain. The sequence of construction of the packing ellipses is determined by the shortest distance from the fictitious centre in such a way that the generation front is more or less a circular loop with occasional minor concave parts due to element size variation. As soon as an ellipse is added to the generation front, finite elements are directly generated by properly connecting frontal segments with the centre of the new ellipse. Ellipses are packed closely and in contact with the existing ellipses by an iterative procedure according to the specified anisotropic metric tensor. The anisotropic meshes generated by ellipse packing can also be used through a mapping process to produce parametric surface meshes of various characteristics. The size and the orientation of the ellipses in the pack are controlled by the metric tensor as derived from the principal surface curvatures. In contrast to other mesh generation schemes, the domain boundary is not considered in the process of ellipse packing, this reduces a lot of geometrical checks for intersection between frontal segments. Five examples are given to show the effectiveness and robustness of anisotropic mesh generation and the application of ellipse packing to mesh generation over various curved surfaces.
内容类型	期刊论文
源URL	[http://124.16.136.157/handle/311060/12494]
专题	软件研究所_软件所图书馆_期刊论文
推荐引用方式 GB/T 7714	Lo SH,Wang WX. generation of anisotropic mesh by ellipse packing over an unbounded domain[J]. ENGINEERING WITH COMPUTERS,2005,20(4):372-383.
APA	Lo SH,&Wang WX.(2005).generation of anisotropic mesh by ellipse packing over an unbounded domain.ENGINEERING WITH COMPUTERS,20(4),372-383.
MLA	Lo SH,et al."generation of anisotropic mesh by ellipse packing over an unbounded domain".ENGINEERING WITH COMPUTERS 20.4(2005):372-383.