Numerical Calculation of Appendage--Flat Plate Junction Flow.

Abstract

A steady, incompressible, three-dimensional Reynolds equation solver was applied to the problem of flow past an appendage mounted on a flat plate. The code, called INS3D, was developed in a joint effort between NASA Ames Research Center and Rocketdyne, INS3d handles the pressure using a pseudo-compressibility approach to obtain a steady-state solution. A beam-warming approximate factorization scheme is used to discretize the equations. A Baldwin-Lomax type scheme was used to parameterize the shear stresses for the appendage-flat plate problem. Comparisons were made with wind tunnel experiments of Dickinson, conducted in the low turbulence wind tunnel at DTNSRDC. The observed and predicted pressure distributions on the flat plate agreed well, but the lateral extent of the horseshoe vortex was overpredicted compared to experimental data. Predicted mean and cross flow velocities exhibited all the essential features of the appendage-flat plate corner region, and showed good qualitative agreement with the experiments. Keywords: Separated flow; Three-dimensional flow; Turbulence; Computer simulation.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1987
Accession Number
ADA186371

Entities

People

  • Roger W. Burke

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Equations
  • Flow
  • Flow Fields
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Measurement
  • Molecular Dynamics
  • Pressure Distribution
  • Pressure Gradients
  • Shear Stresses
  • Three Dimensional
  • Turbulence
  • Two Dimensional
  • Viscous Flow

Fields of Study

  • Physics

Readers

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