THERMAL ACCOMMODATION COEFFICIENT FOR AIR ON TUNGSTEN.

Abstract

The inherently difficult problem of determining thermal accommodation coefficients in air is studied. A solution, to lower the ambient temperature, is tendered. The thermal accommodation coefficient of air on a tungsten wire, 0.005 inches in diameter and 20 inches long, was investigated in the free molecule regime. The coefficient was found to decrease with an increase in temperature; at 140 F and 440 F the values of the coefficient were 0.85 and 0.20, respectively. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1966
Accession Number
AD0635231

Entities

People

  • Charles A. Lau

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Coefficients
  • Diameters
  • Elements
  • Geometry
  • Group 6 Elements
  • Mathematics
  • Metals
  • Molecules
  • Physical Properties
  • Tungsten

Readers

  • Fluid Dynamics.
  • Thermal Physics or Thermal Science.