A PROPOSED CORRELATION SCHEME FOR GAS-FILM COOLING DATA.

Abstract

The cooling of air-breathing engines and rocket motors by gas film was studied by many investigators. Even at subsonic speeds, the correlations and empirical formulae of various investigators do not produce data that are in agreement. A correlating scheme is proposed which, although not perfect, does take into consideration the experimental data from several sources and the variables that make any such scheme extremely difficult. The report includes a brief history of gas-film cooling and a discussion of some of the major factors affecting gas-film cooling -- such factors as pressure gradients, injection geometry velocity mismatch of the coolant stream, and temperature ratio. Although a scheme is proposed, the inherent problems warrant further investigations. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1966
Accession Number
AD0643523

Entities

People

  • G. W. Haering

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Agreements
  • Air Breathing
  • Air Breathing Engines
  • Cooling
  • Engines
  • Experimental Data
  • Film Cooling
  • Geometry
  • Pressure Gradients
  • Respiration
  • Rocket Engines
  • Rockets
  • Temperature Gradients

Readers

  • Fluid Dynamics.
  • Systems Analysis and Design
  • Thermal Physics or Thermal Science.