Extraction of Crack-free Isosurfaces from Adaptive Mesh Refinement Data
Extraction of Crack-free Isosurfaces from Adaptive Mesh Refinement Data
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DOI：
10.2312/vissym/vissym01/025-034
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发表时间：
2001-05
期刊：
影响因子：
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通讯作者：
G. Weber;O. Kreylos;T. Ligocki;J. Shalf;H. Hagen;B. Hamann;K. Joy
中科院分区：
文献类型：
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作者：
G. Weber;O. Kreylos;T. Ligocki;J. Shalf;H. Hagen;B. Hamann;K. Joy
自适应网格细化（AMR）是一种用于计算流体动力学（CFD）的数值模拟技术。它允许对现象的有效模拟，其特征是某些变量的局部行为复杂性大大变化。通过在不同分辨率下使用一组嵌套网格，AMR结合了结构化直流网格的简单性，并有可能适应复杂性和空间分辨率的局部变化。提取等音表面时，科学数据的层次表示构成挑战。在不同分辨率表示的区域之间的边界可能会出现裂缝。我们提出了一种从AMR数据中提取等音表面的方法，该方法避免了不同分辨率之间的边界的裂纹。
Adaptive mesh refinement (AMR) is a numerical simulation technique used in computational fluid dynamics (CFD). It permits the efficient simulation of phenomena characterized by substantially varying scales in complexity of local behavior of certain variables. By using a set of nested grids at different resolutions, AMR combines the simplicity of structured rectilinear grids with the possibility to adapt to local changes in complexity and spatial resolution. Hierarchical representations of scientific data pose challenges when isosurfaces are extracted. Cracks can arise at the boundaries between regions represented at different resolutions. We present a method for the extraction of isosurfaces from AMR data that avoids cracks at the boundaries between levels of different resolution.