The Effect of Gas Diffusion and Vaporization on the Entrainment Coefficient for a Ventilated Cavity

Abstract

A method is presented for determining the effect of gas diffusion and vaporization on the volume flowrate of gas needed to sustain a ventilated cavity. The analysis for the gas diffusion effect is based on a mathematical model of diffusion which accounts for changes in flow velocity, body scale, model geometry, and air content. Experimental studies compare favorably with the analysis. Also, a scaling relationship is proposed for ventilated cavity flows.

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Document Details

Document Type
Technical Report
Publication Date
Jan 24, 1974
Accession Number
AD0780950

Entities

People

  • Donald S. Weir
  • Michael L. Billet

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Diffusion
  • Equations
  • Flow
  • Fluid Mechanics
  • Free Stream
  • Froude Number
  • Geometry
  • Layers
  • Mathematical Models
  • Navy
  • Partial Pressure
  • Research Facilities
  • Reynolds Number
  • Static Pressure
  • Turbulent Boundary Layer
  • Vapor Pressure

Readers

  • Combustion and Flow Dynamics.
  • Thermal Physics or Thermal Science.