A CRITICAL ANALYSIS OF NUMERICAL TECHNIQUES: THE PISTON-DRIVEN INVISCID FLOW

Abstract

A critical analysis of well-known procedures for the computation of one-dimensional shocked flows is made, in order to show the inconveniences of computing finite differences across a discontinuity and to prove that the use of the equations of motion in conservation form does not make the results any more accurate. A technique is developed to treat one-dimensional inviscid problems and it is applied to the problem of an accelerating piston. Practical and safe ways to predict the formation of a shock and to follow it up in its evolution are given.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1969
Accession Number
AD0693037

Entities

People

  • Gino Moretti

Organizations

  • New York University Tandon School of Engineering

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Applied Mechanics
  • Computations
  • Computer Programming
  • Computers
  • Discontinuities
  • Equations
  • Equations Of Motion
  • Flow
  • High Pressure
  • Inviscid Flow
  • Mach Number
  • Mechanics
  • Military Research
  • Pressure Distribution
  • Reynolds Number
  • Steady State

Fields of Study

  • Physics

Readers

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