Abstract
We present a geometric approach for calculating integrals over irregular domains described by a level-set function. This procedure can be used to evaluate integrals over a lower dimensional interface and may be used to evaluate the contribution of singular source terms. This approach produces results that are second-order accurate and robust to the perturbation of the interface location on the grid. Moreover, since we use a cell-wise approach, this procedure can be easily extended to quadtree and octree grids. We demonstrate the second-order accuracy and the robustness of the method in two and three spatial dimensions.
Original language | English |
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Pages (from-to) | 1432-1443 |
Number of pages | 12 |
Journal | Journal of Computational Physics |
Volume | 226 |
Issue number | 2 |
DOIs | |
State | Published - 1 Oct 2007 |
Keywords
- Integration
- Isosurfacing
- Level-set methods
- Quadtree/octree data structures