ANALYSIS AND USER'S MANUAL FOR IMPLICIT FINITE-DIFFERENCE COMPUTER PROGRAM FOR LAMINAR COMPRESSIBLE BOUNDARY LAYER CALCULATIONS.

Abstract

An IBM 7090/94 computer program to calculate flow properties within boundary layers, for an 'ideal' compressible gas, was completed. The governing differential equations are approximated by an implicit finite-differencing scheme which is posed directly in (nondimensionalized) physical coordinates; the streamwise coordinate is scaled with respect to a reference length, while the normal coordinate is so scaled and also stretched by the square root of a reference Reynolds number. The program is designed for bodies that are either two-dimensional or axisymmetric and the gas (air) is considered to be calorically perfect according to the equation of state, p = rho RT. Initial data through the boundary layer must be prescribed, as well as the streamwise variation of pressure, and of either wall temperature, T sub w' or the gradient of T sub w normal to the wall, partial T sub w/partial y. A boundary layer of zero thickness at the initial station may also be accommodated. All inputs are specified in physical coordinates. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 29, 1966
Accession Number
AD0655681

Entities

People

  • E. Lieberman
  • F. Lane
  • Harald Fox

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Computer Programs
  • Computers
  • Differential Equations
  • Equations
  • Layers
  • Reynolds Number
  • Square Roots
  • Two Dimensional

Fields of Study

  • Physics

Readers

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