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Title: Conservative remapping and region overlays by intersecting arbitrary polyhedra

Abstract

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.

Authors:
 [1]
  1. Lawrence Livermore National Lab., CA (United States)
Publication Date:
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
320962
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Journal of Computational Physics
Additional Journal Information:
Journal Volume: 148; Journal Issue: 2; Other Information: PBD: 20 Jan 1999
Country of Publication:
United States
Language:
English
Subject:
99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; 66 PHYSICS; MAPPING; FLUID MECHANICS; GEOMETRY; ALGORITHMS; MESH GENERATION; PARALLEL PROCESSING

Citation Formats

Grandy, J. Conservative remapping and region overlays by intersecting arbitrary polyhedra. United States: N. p., 1999. Web. doi:10.1006/jcph.1998.6125.
Grandy, J. Conservative remapping and region overlays by intersecting arbitrary polyhedra. United States. https://doi.org/10.1006/jcph.1998.6125
Grandy, J. 1999. "Conservative remapping and region overlays by intersecting arbitrary polyhedra". United States. https://doi.org/10.1006/jcph.1998.6125.
@article{osti_320962,
title = {Conservative remapping and region overlays by intersecting arbitrary polyhedra},
author = {Grandy, J},
abstractNote = {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.},
doi = {10.1006/jcph.1998.6125},
url = {https://www.osti.gov/biblio/320962}, journal = {Journal of Computational Physics},
number = 2,
volume = 148,
place = {United States},
year = {Wed Jan 20 00:00:00 EST 1999},
month = {Wed Jan 20 00:00:00 EST 1999}
}