Accession Number : AD0778942
Title : Second Order Effects in Unstable Boundary Layers on a Flat Plate.
Descriptive Note : Interim rept.,
Corporate Author : TEXAS UNIV AUSTIN DEPT OF AEROSPACE ENGINEERING AND ENGINEERING MECHANICS
Personal Author(s) : Antar,Basil Naman ; Collins,Frank G.
Report Date : JAN 1974
Pagination or Media Count : 204
Abstract : A numerical study of one stage of the transition region from laminar to turbulent flow of the boundary layer over a flat plate was performed. The theoretical development follows that of Benney and Lin in which the interaction of a two-dimensional and a restricted three-dimensional periodic disturbance was considered up to second order terms in a series expansion. Several laminar profiles were studied, all belonging to the Falkner-Skan equation. The assumption of equal wave speeds for the two-dimensional and the three-dimensional disturbances was relaxed giving rise to a slow modulation of the mean secondary flow. (Author)
Descriptors : *Flat plate models, *Fluid dynamics, Hydrodynamics, Boundary layer transition, Airfoils, Secondary flow, Stability
Subject Categories : Fluid Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE