Accession Number : ADA186406

Title :   Nonlinear and Nonparallel Stability Problems.

Descriptive Note : Final rept. Jul 84-Nov 86,

Corporate Author : CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MECHANICAL AND AEROSPACE ENGIN EERING

Personal Author(s) : Reshotko, E.

Report Date : JUN 1987

Pagination or Media Count : 7

Abstract : An analysis was developed describing the spatial parallel flow development of disturbances that are introduced into an incompressible laminar boundary layer by a vibrating ribbon at the wall. The dominant mode is corresponding to the eigenmode of the flow at the ribbon frequency, as found by Gaster, but the solution technique does not require the questionable assumptions previously invoked. Analysis of the Compressibility introduces additional complexities, including the stagnation enthalpies of the two streams, and admits influences of higher acoustical modes. Keywords: Compressible free shear layers.

Descriptors :   *LAMINAR BOUNDARY LAYER, *INCOMPRESSIBLE FLOW, ACOUSTICS, COMPRESSIVE PROPERTIES, ENTHALPY, FLOW, INCOMPRESSIBILITY, LAYERS, NONLINEAR SYSTEMS, SHEAR PROPERTIES, SOLUTIONS(GENERAL), SPATIAL DISTRIBUTION, STABILITY, STAGNATION, VIBRATION, VIBRATION, COVERINGS, FOURIER TRANSFORMATION, PARALLEL ORIENTATION.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE