Accession Number : ADA192706

Title :   The Diffusion of Vorticity from a Plane Boundary.

Descriptive Note : Final rept. Dec 86-Sep 87,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Hershey, A V

PDF Url : ADA192706

Report Date : Sep 1988

Pagination or Media Count : 27

Abstract : Any discontinuity in flow at a plane boundary is dispersed by the diffusion of vorticity into a boundary layer and wake. Experimental measurements in the past have been correlated with empirical formulations. A generalization gives both the horizontal component and the vertical component of the mean velocity. In the laminar sublayer the velocity is a solution of the diffusion equation. In the turbulent boundary layer the velocity can be expressed by a Fourier integral. In the free stream there is a vertical persistence of velocity. The computation of velocity is provided by subroutines. Keywords: Fourier analysis, Numerical analysis, Hydrodynamics.

Descriptors :   *DIFFUSION, *VORTICES, *BOUNDARY LAYER FLOW, BOUNDARIES, BOUNDARY LAYER, COMPUTATIONS, EXPERIMENTAL DATA, FORMULATIONS, FOURIER ANALYSIS, FREE STREAM, HYDRODYNAMICS, LAMINAR FLOW, MEAN, MEASUREMENT, NUMERICAL ANALYSIS, SUBROUTINES, SUBSURFACE, TURBULENT BOUNDARY LAYER, VELOCITY, VERTICAL ORIENTATION, WAKE, EQUATIONS OF MOTION

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE