A FUNDAMENTAL INVESTIGATION OF THE PHENOMENA THAT CHARACTERIZE LIQUID - FILM COOLING

Abstract

An experimental investigation was conducted to determine the net rate of mass transfer from a thin liquid film to a proximate gas stream. Three different flow situations were investigated: (a) constant velocity, cold gas flow; (b) constant velocity, heated gas flow and (c) strongly accelerated, heated gas flow. The experiments were conducted in a horizonal test section by passing an air stream over a liquid film formed on the lower surface. All of the mass transfer data (approximately 600 datum points) was correlated in terms of relatively simple dimensional parameters. Of particular significance is the fact that a fifteen fold variation in liquid viscosity was found not to have any noticeable effect on the rate of entrainment. An analysis was made to extend the present results to the case of an arbitrary film cooled length. The agreement between the reported data and the results predicted from the present theory was good.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1969
Accession Number
AD0690533

Entities

People

  • Mel R. L'ecuyer
  • Roger A. Gater

Organizations

  • Purdue University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Alcohols
  • Boundary Layer
  • Computational Fluid Dynamics
  • Crystal Structure
  • Energy Transfer
  • Experimental Data
  • Fluid Dynamics
  • Gas Flow
  • Heat Transfer
  • Measurement
  • Physical Properties
  • Plastic Explosives
  • Pressure Gages
  • Pressure Measurement
  • Rocket Engines
  • Surface Tension
  • Thermodynamic Properties

Readers

  • Atmospheric Science/Meteorology
  • Combustion science or combustion engineering.
  • Theoretical Analysis.