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首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >ADAPTIVE UNSTRUCTURED GRID FOR THREE-DIMENSIONAL INTERFACE REPRESENTATION
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ADAPTIVE UNSTRUCTURED GRID FOR THREE-DIMENSIONAL INTERFACE REPRESENTATION

机译：三维界面表示的自适应非结构​​化网格

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摘要

Moving-boundary problems arise in numerous important physical phenomena, and often form complex shapes during their evolution. The ability to track the interface in such cases in two dimensions is well established. However, modifying the grid representing the interface as it evolves in three-dimensional space introduces additional issues. In the current work, three-dimensional interfaces are represented by adaptive unstructured grids. The grids are restructured and refined based on the shape and size of the triangular elements in the grid that forms the interfaces. As the interface deforms, points are automatically added to ensure that the accuracy of interface representation remains consistent. Results are presented to show how complex interface features, including surface curvatures and normals, can be captured by modifying an existing method that uses an approximation to the Dupin indicatrix. [References: 24]
机译：移动边界问题出现在许多重要的物理现象中，并且在其演变过程中经常形成复杂的形状。在这种情况下，在二维中跟踪界面的能力已得到很好的确立。但是，随着在三维空间中的演化，修改表示接口的网格会带来其他问题。在当前的工作中，三维界面由自适应非结构​​化网格表示。网格根据构成界面的网格中三角形元素的形状和大小进行重组和优化。当界面变形时，会自动添加点以确保界面表示的准确性保持一致。结果表明，如何通过修改现有方法（近似于Dupin指标）来捕获复杂的界面特征（包括表面曲率和法线）。 [参考：24]

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