Progress in Modeling Pressure Oscillations in 30-mm Regenerative Liquid Propellant Guns.

Abstract

Regenerative liquid propellant guns (RLPG) have been studied for many years. RLPG gun fuings almost always show large high-frequency pressure oscillations. To study this phenomenon, a two-dimensional (2-D) axisymmetlic fluid dynamics model of the combustion chamber/gun tube of an RLPG has been developed. High-frequency oscillations are generated naturally by the code. Recently, the code has been extended to three dimensions (3-D). The results generally compare well with RLPG data; however, there are some recent cases that the code does not represent well. In this report, several extensions to the program are discussed in an attempt to improve the fidelity of the code. The most useful extension has been an intact-core model.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
ADA338058

Entities

People

  • Terence P. Coffee

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Axisymmetric
  • Burning Rate
  • Chambers
  • Combustion
  • Combustion Chambers
  • Computational Fluid Dynamics
  • Differential Equations
  • Fluid Dynamics
  • Fluid Mechanics
  • Frequency
  • Heat Transfer
  • Ignition
  • Ignition Lag
  • Liquid Propellants
  • Propellants
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Computational Fluid Dynamics (CFD)
  • Rocket Propulsion.