Advances in co-volume mesh generation and mesh optimisation techniques
Advances in co-volume mesh generation and mesh optimisation techniques
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DOI：
10.1016/j.compstruc.2016.06.009
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发表时间：
2017-03
影响因子：
4.7
通讯作者：
O. Morgan;Sean Walton;O. Hassan;K. Morgan
中科院分区：
文献类型：
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作者：
O. Morgan;Sean Walton;O. Hassan;K. Morgan
本文介绍了适用于共体积解方案的非结构化、非均匀、对偶正交网格生成的改进技术的发展。将改进的推进前沿技术和八叉树delaunay算法两种新的网格生成技术与网格优化算法相结合。当使用Delaunay - Voronoi对偶时，为共体方案构建相互正交的网格，必须最小化不包含Voronoi顶点的Delaunay元素的数量。这些新技术对以前的方法进行了改进，因为它们生成的网格中不包含Voronoi顶点的元素数量减少了。特别是，我们发现无论初始网格的质量如何，优化算法都是非常有效的，它可以应用于任何网格修饰问题。通过将所提出的方法应用于一些复杂的工业航空航天几何形状来说明这一点。
This paper introduces developments in modified techniques for the generation of unstructured, non-uniform, dual orthogonal meshes which are suitable for use with co-volume solution schemes. Two new mesh generation techniques, a modified advancing front technique and an octree-Delaunay algorithm, are coupled with a mesh optimisation algorithm. When using a Delaunay–Voronoi dual, to construct mutually orthogonal meshes for co-volume schemes, it is essential to minimise the number of Delaunay elements which do not contain their Voronoi vertex. These new techniques provide an improvement over previous approaches, as they produce meshes in which the number of elements that do not contain their Voronoi vertex is reduced. In particular, it is found that the optimisation algorithm, which could be applied to any mesh cosmetics problem, is very effective, regardless of the quality of the initial mesh. This is illustrated by applying the proposed approach to a number of complex industrial aerospace geometries.