Computational Fluid Dynamics Results for a 25-mm Projectile

Abstract

Computational fluid dynamics approaches were used to compute the flow fields of a 25-mm projectile, modeled with and without a jet cavity. Steady-state numerical results have been obtained for a series of cases at Mach number 0.756, at 0 deg angle of attack, with jet pressures of 3, 6, and 12 atm. Full three-dimensional computations were performed using a two-equation realizable k-epsilon turbulence model. Force and moment data have been extracted from the solutions for comparison and show that increasing jet pressure increases the effect on normal force and pitching moment while having little effect on drag.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2007
Accession Number
ADA474057

Entities

People

  • Jubaraj Sahu
  • Karen Heavey

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Computations
  • Dynamics
  • Equations
  • Flow
  • Flow Fields
  • Fluid Dynamics
  • Geometry
  • Mach Number
  • Military Research
  • Physics
  • Projectiles
  • Three Dimensional
  • Turbulence
  • Weapons

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.
  • ballistics.