Numerical Solution of the Compressible Boundary Layer Equations Over Axisymmetric Surfaces.

Abstract

A numerical solution of the compressible boundary layer equations was developed for flows over either two-dimensional or axisymmetric surfaces. The solution method is capable of solving for boundary layer parameters in either laminar or turbulent flows. In the case of turbulent flow, closure is achieved by use of a two-layered eddy viscosity model. The boundary layer equations are solved by a numerical marching procedure. A Mangler-Levy-Lees transformation of independent variables is used to improve the efficiency of the numerical solution. The transformed boundary layer equations are then linearized by a three point finite difference scheme. The linearized equations are solved by a matrix solution technique. Comparisons of computed boundary layer parameters with experimentally determined parameters were made for both laminar and turbulent flows over axisymmetric bodies. The comparisons show the numerical solution to be very accurate. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1976
Accession Number
ADA034943

Entities

People

  • Charles R. Blake

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Axisymmetric
  • Boundary Layer
  • Boundary Layer Flow
  • Computer Programs
  • Coordinate Systems
  • Equations
  • Flow
  • Fluid Dynamics
  • Geometry
  • Heat Transfer
  • Heat Transfer Coefficients
  • Layers
  • Mach Number
  • Pressure Distribution
  • Pressure Gradients
  • Turbulent Flow
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Dynamics.