EXPERIMENTAL INVESTIGATION OF WATER VAPORIZATION IN A NONISOTHERMAL TURBULENT BOUNDARY LAYER.

Abstract

The paper reports the results on an investigation of water transpiration cooling of a ceramic plate surface in a gradient dry air flow under the conditions of a turbulent boundary layer. The ambient temperature changed from 50 to 130 C, the humidity being about 1 - 3 percent. Heat and mass transfer coefficients were determined by both heat-substance balance at the wall and boundary-layer reading. As a result dimensionless formulas were obtained to describe a change in the combined heat and mass transfer rate under the above conditions. Estimated is the influence of the longitudinal pressure gradient and medium turbulization on transpiration cooling. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 21, 1966
Accession Number
AD0637443

Entities

People

  • B. I. Fedorov

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Air Flow
  • Boundaries
  • Boundary Layer
  • Heat Energy
  • Layers
  • Mass Transfer
  • Pressure Gradients
  • Transition Temperature
  • Turbulent Boundary Layer

Fields of Study

  • Engineering

Readers

  • Combustion and Flow Dynamics.
  • Fluid Dynamics.