Interferometer Study of Free Convection about a Rectangular Cavity in a Flat Plate

Abstract

Interferometer study was made to determine the effect of a rectangular cavity on the heat transfer rate from a heated vertical flat plate. Cavities 1 in. wide with depths of 0.2 in., 0.4 in. and 0.6 in. were placed perpendicular to the flow. Each cavity was located at four elevations 26.7 in., 32.7 in., 38.7 in. and 44.7 in. The temperature difference was constant at 130 R which resulted in a Grashof number range of 1.75x10 to the 9th power to 1. 24x10 to the 10th power. The flow over the smooth flat plate went from laminar to turbulent. The cavity's effect was dependent on the type of flow. The heat transfer rate was increased in the laminar regime and decreased in the turbulent regime.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1969
Accession Number
AD0853068

Entities

People

  • Karl E. Luesse

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Boundary Layer
  • Classification
  • Computer Programs
  • Elevation
  • Engineering
  • Equations
  • Flow Fields
  • Heat Transfer
  • Heat Transfer Coefficients
  • Interferometers
  • Leading Edges
  • Measurement
  • Security
  • Temperature Gradients
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Optical Physics and Photonics.