Conservative remapping and region overlays by intersecting arbitrary polyhedra
- Lawrence Livermore National Lab., CA (United States)
An efficient algorithm for first-order grid intersections, by computing geometrically the intersection volume between donor and target zones, is developed for polyhedral meshes. The author examines two applications of grid intersections. One application is first-order remapping, in which zone and node centered fields defined on a given mesh are transferred to a different mesh. The second application is region overlays, in which a region with homogeneous material properties is approximated by a grid of polyhedra and mapped onto an arbitrary hexahedral mesh, creating mixed zones on the boundary of the region. He demonstrates the use of this grid intersection algorithm within the framework of hydrodynamics simulations, and using a domain decomposed mesh, he studies the feasibility of a parallel implementation.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 320962
- Journal Information:
- Journal of Computational Physics, Vol. 148, Issue 2; Other Information: PBD: 20 Jan 1999
- Country of Publication:
- United States
- Language:
- English
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