Accession Number : ADA186371

Title :   Numerical Calculation of Appendage--Flat Plate Junction Flow.

Descriptive Note : Final rept.,

Corporate Author : DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Personal Author(s) : Burke, Roger W

PDF Url : ADA186371

Report Date : Sep 1987

Pagination or Media Count : 37

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.

Descriptors :   *FLAT PLATE MODELS, *SHEAR STRESSES, COMPUTERIZED SIMULATION, CROSS FLOW, EXPERIMENTAL DATA, LOW LEVEL, NUMERICAL METHODS AND PROCEDURES, PRESSURE DISTRIBUTION, REYNOLDS NUMBER, SOLUTIONS(GENERAL), STEADY STATE, THREE DIMENSIONAL, THREE DIMENSIONAL FLOW, TURBULENCE, VELOCITY, VORTICES, WIND TUNNEL TESTS, WIND TUNNELS, PERTURBATIONS, CROSS FLOW

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE