Calculation of Three-Dimensional Boundary Layers on Bodies at Incidence.

Abstract

Three-dimensional thin boundary-layer equations for laminar and turbulent flows are solved by two different numerical schemes. The methods are applied to the flow over bodies of revolution at incidence and the results are compared with the available experimental data in order to study the range of validity of the classical boundary-layer approximations in regions of increasing circumferential gradients and flow reversal associated with the early stages of a free-vortex type of separation. Comparison with the DFVLR 6:1 spheroid data of Meier et al and the 4:1 combination-body data of Ramaprian, Patel and Choi indicate that the methods perform well in regions where the boundary layer remains thin but the predictions deteriorate as the boundary layer thickens. The results point out the need for the development of methods of handle thick boundary layers and viscous-inviscid interactions. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1982
Accession Number
ADA125634

Entities

People

  • Jonghyuk Baek
  • Virendra C. Patel

Organizations

  • University of Iowa

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Bodies
  • Bodies Of Revolution
  • Boundary Layer
  • Computational Fluid Dynamics
  • Engineers
  • Equations
  • Flow
  • Fluid Flow
  • Geometry
  • Military Research
  • Naval Architecture
  • Physics Laboratories
  • Pressure Distribution
  • Three Dimensional
  • Turbulent Flow
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.