THE CHOICE OF A TIME-DEPENDENT TECHNIQUE IN GAS DYNAMICS.

Abstract

A definition of the word 'technique', as related to numerical computations of time-dependent problems in gas dynamics, is given. Requirements of accuracy, economy and flexibility are considered. A technique which attempts to satisfy them is presented. Emphasis is put on the consistency of the numerical procedure with the physical problem. The concepts of consistency, convergence and truncation error are reexamined. The advantages of recasting the equations in divergence form are denied. Certain breakdowns in accuracy occurring in regions of continuous flow are explained. The physical role played by discontinuities and its numerical counterpart are discussed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1969
Accession Number
AD0705514

Entities

People

  • Gino Moretti

Organizations

  • New York University Tandon School of Engineering

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Computations
  • Consistency
  • Convergence
  • Discontinuities
  • Dynamics
  • Equations
  • Errors
  • Gas Dynamics
  • Mathematics
  • Mechanical Properties
  • Mechanics
  • Resilience
  • Truncation

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