Accession Number : ADA310717

Title :   Estimates of the Wavenumber-Frequency Spectra for the Nonhomogeneous Streamwise Transition Flow Pressure Field.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL UNDERSEA WARFARE CENTER NEWPORT DIV RI

Personal Author(s) : Ochsenknecht, Ronald I.

PDF Url : ADA310717

Report Date : 14 JUN 1996

Pagination or Media Count : 48

Abstract : This research implements computer models to provide unprecedented estimates of the two spectral formats for the stationary, nonhomogeneous, streamwise transitional flow pressure field. Estimates of the space-varying wavenumber-frequency spectrum that reveal components having convective as well as subconvective velocities are presented. These subconvective components are believed to be associated with the leading and trailing edge speed of the turbulent spot generation process. In addition, estimates of the full spectral two wavenumber-frequency spectrum that are concise and informationally equivalent to the space-varying wavenumber-frequency spectrum are provided.

Descriptors :   *FLOW FIELDS, *BOUNDARY LAYER TRANSITION, *PRESSURE DISTRIBUTION, PRESSURE GRADIENTS, MATHEMATICAL MODELS, COMPUTERIZED SIMULATION, FOURIER TRANSFORMATION, TIME DEPENDENCE, TURBULENCE, TURBULENT FLOW, TURBULENT BOUNDARY LAYER, COMPUTATIONAL FLUID DYNAMICS, CORRELATION, LEADING EDGES, SUBSONIC FLOW, CONVECTION(HEAT TRANSFER), BOUNDARY LAYER FLOW, TRAILING EDGES, LAMINAR BOUNDARY LAYER.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE