RADIATING HYPERVELOCITY COUETTE AND BOUNDARY LAYER FLOW IN AIR,

Abstract

An analytical solution for high speed Couette flow of a gray gas is given for the situation in which the dominant physical mechanisms are the production of energy by viscous dissipation and its transfer by radiation. The analysis is extended to air for the non-gray, optically thin case including thermal conduction, and numerical results are presented to show the range of validity of the radiation controlled solution. The Couette flow results are then applied to the problem of the hypervelocity, laminar boundary layer on a flat plate in air. An approximate expression for the Planck mean absorption coefficient of air is used, and the results obtained confirm the hypotheses that these boundary layers will be optically thin and radiation controlled. The analysis results in simple expressions for estimating the boundary layer temperature and heat transfer coefficient. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1966
Accession Number
AD0631946

Entities

People

  • Merwin Sibulkin

Organizations

  • Brown University

Tags

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Boundaries
  • Boundary Layer
  • Boundary Layer Flow
  • Coefficients
  • Conduction (Heat Transfer)
  • Couette Flow
  • Flow
  • Heat Transfer
  • Heat Transfer Coefficients
  • Laminar Boundary Layer
  • Layers
  • Radiation

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Spectroscopy.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers
  • Hypersonics - Hypersonic Flight