Multigrid Methods for Mesh Relaxation Metadata

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Title

  • Main Title Multigrid Methods for Mesh Relaxation

Creator

  • Author: O'Brien, M J
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Lawrence Livermore National Laboratory
    Place of Publication: Livermore, California
    Additional Info: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

Date

  • Creation: 2006-06-12

Language

  • English

Description

  • Content Description: When generating a mesh for the initial conditions for a computer simulation, you want the mesh to be as smooth as possible. A common practice is to use equipotential mesh relaxation to smooth out a distorted computational mesh. Typically a Laplace-like equation is set up for the mesh coordinates and then one or more Jacobi iterations are performed to relax the mesh. As the zone count gets really large, the Jacobi iteration becomes less and less effective and we are stuck with our original unrelaxed mesh. This type of iteration can only damp high frequency errors and the smooth errors remain. When the zone count is large, almost everything looks smooth so relaxation cannot solve the problem. In this paper we examine a multigrid technique which effectively smooths out the mesh, independent of the number of zones.
  • Physical Description: PDF-file: 11 pages; size: 2.6 Mbytes

Subject

  • Keyword: Computerized Simulation
  • Keyword: Uninterruptible Power Supplies
  • Keyword: Relaxation
  • STI Subject Categories: 99 General And Miscellaneous//Mathematics, Computing, And Information Science

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: UCRL-TR-222074
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/897998
  • Office of Scientific & Technical Information Report Number: 897998
  • Archival Resource Key: ark:/67531/metadc888834
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