Adaptive Grid Generation.

Abstract

Algorithms were developed for the generation of grids in 2D and 3D. The 3D code development involved extensive use of computer Symbolic Manipulation. A rigorous code validation procedure was developed. A controversy on the effect of strong coordinate stretching was resolved, with proof that the order of accuracy is not reduced. The contention that a well known method always produces a nonfolded grid was disproven. A family of adaptive algorithms was developed, involving both interior adaption and especially boundary adaption. Initial work was begun on an extension of the variational approach to grid generation. The grid generation algorithms have been applied in the 2D and 3D ELF codes (Electric Field) used in the design of laser electrodes and switches. Applications are in the Pulsed Power area, including SDI research and development. Keywords: adaptive grid generation; elliptic grid generation; symbolic manipulation; code verification; variational formulation; lasers; electrode design.

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Document Details

Document Type
Technical Report
Publication Date
May 10, 1986
Accession Number
ADA174942

Entities

People

  • Patrick J. Roache

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Applied Mathematics
  • Computational Fluid Dynamics
  • Computers
  • Contracts
  • Corporations
  • Differential Equations
  • Electric Fields
  • Equations
  • Fluid Dynamics
  • Geometry
  • New Mexico
  • Personal Computers
  • Pulsed Power
  • Security
  • Three Dimensional

Fields of Study

  • Engineering

Readers

  • Computational Fluid Dynamics (CFD)
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)

Technology Areas

  • Directed Energy