Transonic Airfoils with a Given Pressure Distribution,

Abstract

An inverse design procedure for airfoils, based on hodograph techniques, has been developed. For subcritical flows the subsonic portion of the pressure distribution is prescribed; for supercritical flows the stream function on the sonic line is given instead of the supercritical portion of the pressure distribution. In the special variables we use, the equation for the stream function may be solved iteratively using a fast Poisson solver, for the subsonic portion of the flow; for supercritical flows, the supersonic portion is calculated using a characteristic calculation. The results are then mapped back to the physical plane to determine the airfoil shape. Both subcritical and supercritical results are presented. The show good agreement with the direct computation of the flow past the designed airfoil. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1981
Accession Number
ADA116262

Entities

People

  • A. Hassan
  • A. Robert Seebass
  • H. Sobieczky

Organizations

  • University of Arizona

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Airfoils
  • Algorithms
  • Boundary Value Problems
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Engineering
  • Equations
  • Flow Fields
  • Fluid Dynamics
  • Geometry
  • Intellectual Property
  • Mechanical Engineering
  • Network Protocols
  • Pressure Distribution
  • Supercritical Airfoils
  • Transonic Airfoils

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow