A Numerical Analysis of Muzzle Blast-Precursor Flow.

Abstract

The precursor flow evolution in a muzzle blast is simulated by a numerical analysis of a compressible, viscous, unsteady flow. Main features of the analysis are: use of a computational grid obtained by conformal mapping, the lambda-scheme for integration of the Navier-Stokes equations, simplified treatment of shocks and boundary points. After a discussion of separation effects on a divergent channel, applications are made to the firing of a bullet. The calculation is continued until the billet is completely out of the barrel. The mesh used has 16 x 16 intervals; despite its coarseness, the details are remarkably accurate. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1980
Accession Number
ADA087597

Entities

People

  • Gino Moretti

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Complex Variables
  • Computational Science
  • Conformal Mapping
  • Coordinate Systems
  • Equations
  • Equations Of Motion
  • Flow Fields
  • Fluid Dynamics
  • High Pressure
  • Navier Stokes Equations
  • Numerical Analysis
  • Pressure Distribution
  • Reynolds Number
  • Turbulent Mixing
  • Two Dimensional
  • Viscous Flow

Readers

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