An Integral Prediction Method for Three-Dimensional Flow Separation.

Abstract

A three-dimensional integral boundary-layer approach is developed and coupled with the streamline method for theoretically determining the vortex-type flow separation. The governing equations are solved in a streamwise system using a power-law profile for the streamwise flow and the Mager profile for the crossflow. The reduced ordinary system is then coupled with the streamline equation and integrated using the fourth-order Runge-Kutta scheme. Crossflow derivatives are evaluated and accounted for during the integration. A prolate spheroid at incidence in an incompressible turbulent flow is considered as a test case. Good comparison between the theory and the experiment has been observed for the case of alpha = 10 degrees. For the case of high incidence, the method predicts a qualitative trend but deviates quantitatively due to the large crossflow involved. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1984
Accession Number
ADA142551

Entities

People

  • David W Taylor
  • T. C. Tai

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Agreements
  • Bodies
  • Boundary Layer
  • Coefficients
  • Equations
  • Flow
  • Flow Separation
  • Fluid Mechanics
  • Mechanics
  • Pressure Distribution
  • Pressure Gradients
  • Reynolds Number
  • Shear Stresses
  • Skin Friction
  • Three Dimensional
  • Three Dimensional Flow
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.