修补独立演算法用于四面体的控制方式???

SANYAN68

Patch Independent Algorithm for Tetrahedrons Method Control
The Patch Independent mesh method for tetrahedrons is based on the following spatial subdivision algorithm: This algorithm ensures refinement of the mesh where necessary, but maintains larger elements where possible, allowing for faster computation. Once the "root" tetrahedron, which encloses the entire geometry, has been initialized, the Patch Independent mesher subdivides the root tetrahedron until all element size requirements (that is, the prescribed local mesh sizes) are met.
At each subdivision step, the edge length of the tetrahedron (=size) is divided by 2. This means that the prescribed sizes should all differ by factors that are an integer power of 2. The size of the root tetra is set to the smallest given size multiplied by 2n. All other prescribed sizes are approximated by subdividing the root tetra. Refer to the series of figures below, which illustrate the process that is followed by the Patch Independent tetra mesher.

At this point, the Patch Independent tetra mesher balances the mesh so that elements sharing an edge or face do not differ in size by more than a factor of 2.


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麻烦大侠说明这段话的意思.....

在这一点上，由超过2的系数，修补独立四面体网格生成器平衡了网格，使元素共用一个边 或 尺寸大小中的面并无差异。

At this point, the Patch Independent tetra mesher balances the mesh so that elements sharing an edge or face do not differ in size by more than a factor of 2.

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