The Use of Hot-Film Technique for Boundary Layer Studies on a 21% Thick Airfoil.

Abstract

A heat transfer method of studying boundary layer flows over airfoils at transsonic test conditions has been investigated. The method employs very thin DISA hot-film gauges housing Constant Temperature Anemometer probes. Provided that the thickness dimension of the films remains less than the critical disturbances height for inducing transition of the laminar boundary layer, the heat transfer response from the films, positioned carefully on the model surface, can be studied to determine the boundary layer characteristics. Results from an application study on a 21% thick laminar flow airfoil model are presented and discussed.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1987
Accession Number
ADA184412

Entities

People

  • Muhammad Khalid

Organizations

  • National Research Council Canada

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Flow
  • Flow
  • Flow Visualization
  • Frequency
  • Heat Transfer
  • Laminar Boundary Layer
  • Laminar Flow
  • Layers
  • Mach Number
  • Measurement
  • Pressure Distribution
  • Pressure Measurement
  • Reynolds Number
  • Shock Waves
  • Steady State
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Thermal Physics or Thermal Science.