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BOUNDARY CONFORMING DELAUNAY MESH GENERATION

机译:边界符合Delaunay网格生成

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摘要

plices such that all boundary simplices satisfy the generalized Gabriel property. It's dual is a Voronoipartition of the same domain which is preferable for Voronoi-box based finite volume schemes. For ar-bitrary 2D polygonal regions, such meshes can be generated in optimal time and size. For arbitrary3D polyhedral domains, however, this problem remains a challenge. The main contribution of this pa-per is to show that boundary conforming Delaunay meshes for 3D polyhedral domains can be gener-ated efficiently when the smallest input angle of the domain is bounded by arccos 1/3 70.53. In ad-dition, well-shaped tetrahedra and appropriate mesh size can be obtained. Our new results areachieved by reanalyzing a classical Delaunay refinement algorithm. Note that our theoretical guaran-tee on the input angle (70.53°) is still too strong for many practical situations. We further discuss vari-ants of the algorithm to relax the input angle restriction and to improve the mesh quality.
机译:图案使得所有边界简单满足广义的加布里埃尔属性。 这是双重的,是相同域的voronoIPARTITION,这对于基于Voronoi-Box的有限体积方案是优选的。 对于Ar-比基格2D多边形区域,可以在最佳时间和尺寸中产生这种网格。 然而,对于Arbitrary3D多面体域来说,这个问题仍然是一个挑战。 该PA-PER的主要贡献是表示当域的最小输入角度由ARCCOS 1/3 70.53界定时,可以有效地生成3D多面体域的边界符合德拉尼亚网格。 在Ad-inition中,可以获得良好的四面体和适当的网格尺寸。 通过重新分析经典Delaunay细化算法,我们的新结果受到影响。 请注意,我们在输入角度(70.53°)上的理论瓜兰 - T恤对于许多实际情况来说仍然太强大。 我们进一步讨论了算法的Vari-蚂蚁,以放宽输入角度限制并提高网格质量。

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