A Composite Velocity Procedure for the Incompressible Navier-Stokes Equations.

Abstract

A boundary layer-relaxation procedure based on a new composite-velocity formulation for the incompressible Navier-Stokes system is described. The equations are interpreted and numerically approximated to reflect the composite nature of the flow. The procedure was previously developed for subsonic flow. Unlike typical Navier-Stokes procedures that differ significantly from their incompressible flow counterparts, the present developments are essentially identical in both cases. Moreover, the extension to transonic flows should be direct. The equations are written in a body-fitted orthogonal coordinate system so that arbitrary geometries can be treated. Application to internal and external flows are discussed. Specific geometries include a boattail simulator, the trailing edge of a plate, Joukowski airfoils and a curved channel. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1981
Accession Number
ADA125215

Entities

People

  • P. K. Khosla
  • S. G. Rubin

Organizations

  • University of Cincinnati

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Applied Mechanics
  • Boundaries
  • Boundary Layer
  • Engineering
  • Equations
  • Flow
  • Geometry
  • Incompressible Flow
  • Layers
  • Mechanics
  • Navier Stokes Equations
  • Pressure Distribution
  • Reynolds Number
  • Simulators
  • Steady Flow
  • Steady State
  • Trailing Edges

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)