Electronic Journal of Differential Equations | Vol.2009, Issue.17 | 2017-05-30 | Pages
A multilevel adaptive mesh generation scheme using Kd-trees
We introduce a mesh refinement strategy for PDE based simulations that benefits from a multilevel decomposition. Using Harten's MRA in terms of Schroder-Pander linear multiresolution analysis [20], we are able to bound discontinuities in $mathbb{R}$. This MRA is extended to $mathbb{R}^n$ in terms of n-orthogonal linear transforms and utilized to identify cells that contain a codimension-one discontinuity. These refinement cells become leaf nodes in a balanced Kd-tree such that a local dyadic MRA is produced in $mathbb{R}^n$, while maintaining a minimal computational footprint. The nodes in the tree form an adaptive mesh whose density increases in the vicinity of a discontinuity.
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A multilevel adaptive mesh generation scheme using Kd-trees
We introduce a mesh refinement strategy for PDE based simulations that benefits from a multilevel decomposition. Using Harten's MRA in terms of Schroder-Pander linear multiresolution analysis [20], we are able to bound discontinuities in $mathbb{R}$. This MRA is extended to $mathbb{R}^n$ in terms of n-orthogonal linear transforms and utilized to identify cells that contain a codimension-one discontinuity. These refinement cells become leaf nodes in a balanced Kd-tree such that a local dyadic MRA is produced in $mathbb{R}^n$, while maintaining a minimal computational footprint. The nodes in the tree form an adaptive mesh whose density increases in the vicinity of a discontinuity.
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discontinuities local dyadic mra mathbbr^n pde based simulations codimensionone mesh refinement strategy balanced kdtree discontinuity computational footprint northogonal linear transforms schroderpander linear multiresolution analysis multilevel decomposition
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Alfonso Limon,Hedley Morris,.A multilevel adaptive mesh generation scheme using Kd-trees. 2009 (17),.
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