Wall Interference in a Two-Dimensional-Flow Wind Tunnel with Consideration of the Effect of Compressibility

Abstract

Theoretical tunnel-wall corrections are derived for an airfoil of finite thickness and camber in a two-dimensional-flow wind tunnel. The theory takes account of the effects of the wake of the airfoil and of the compressibility of the fluid, and is based upon the assumption that the chord of the airfoil is small in comparison with the height of the tunnel. Consideration is given to the phenomenon of choking at high speeds and its relation to the tunnel-wall corrections. The theoretical results are compared with the small amount of low-speed experimental data available and the agreement is seen to be satisfactory, even for relatively large values of the chord-height ratio.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1944
Accession Number
ADA801571

Entities

People

  • H. J. Allen
  • Walter G. Vincenti

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Boundaries
  • Boundary Layer
  • Differential Equations
  • Dynamic Pressure
  • Experimental Data
  • Flow
  • Flow Fields
  • Fluid Dynamics
  • Measurement
  • Pressure Distribution
  • Pressure Gradients
  • Reynolds Number
  • Static Pressure
  • Two Dimensional
  • Two Dimensional Flow
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerodynamics/Aeronautics.
  • Theoretical Analysis.