COMPARISON OF FINITE DIFFERENCE EXPRESSIONS USED IN LAGRANGIAN FLUID FLOW CALCULATIONS

Abstract

A number of commonly used finite-difference analogs to partial derivatives in two space dimensions were investigated, and a few variations were proposed. The accuracy of these analogs was assessed by obtaining numerical results for deformations for which the analytical gradients can be evaluated. None of the analogs appeared superior for those deformations which were investigated, and it appears that a choice may be made on the basis of computational convenience.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1964
Accession Number
AD0608543

Entities

People

  • W. Herrmann

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Air Force
  • Air Force Facilities
  • Coefficients
  • Computers
  • Contracts
  • Crossings
  • Difference Equations
  • Differential Equations
  • Distortion
  • Flow
  • Fluid Flow
  • Pressure Gradients
  • Shape
  • Translations
  • Two Dimensional

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Structural Dynamics.

Technology Areas

  • Space