STEADY TWO-DIMENSIONAL PRESSURE DISTRIBUTIONS ON ARBITRARY PROFILES

Abstract

A method of determining two-dimensional pressure distributions on arbitrary foils is explained. The development is based on an approximate potential theory suggested by Moriya which is empirically modified in a manner suggested by Pinkerton to give an arbitrary lift for a set incidence and at the same time satisfy the Kutta condition. Interpolation functions for the ordinates are used to reduce the calculations to a straightforward numerical procedure which is easily programmed for machine calculations. (FORTRAN statements for such a computer program are included.) The results are those of Riegels. Comparisons are made with other theoretical methods for potential flow and with experimental results. Good agreement with both calculated and measured pressure distributions is found when the lift coefficients are matched. The assumption that cavitation occurs when the local pressure falls to the vapor pressure is not upheld for the cases considered.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1965
Accession Number
AD0622769

Entities

People

  • Terry Brockett

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Agreements
  • Angle Of Incidence
  • Boundary Layer
  • Complex Variables
  • Computational Science
  • Coordinate Systems
  • Free Stream
  • Geometry
  • Measurement
  • Potential Flow
  • Potential Theory
  • Pressure Distribution
  • Reynolds Number
  • Stagnation Point
  • Three Dimensional
  • Two Dimensional
  • Vapor Pressure

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Fluid Dynamics.