Accession Number:

AD0728178

Title:

Flow Visualization Studies of Free Convection Laminar-to-Turbulent Transition along a Heated Vertical Plate in Water Induced by Two-Dimensional Forced Disturbances,

Descriptive Note:

Corporate Author:

DEUTSCHE VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V FREIBURG IM BREISGAU (WEST GERMANY)

Personal Author(s):

Report Date:

1970-03-25

Pagination or Media Count:

8.0

Abstract:

Visual investigations have been made of three-dimensional transition phenomena in the boundary layer along a vertical heated plate in water in free convection under controlled forced disturbances. Regions of intense shear as well as longitudinal vorticity have been noted in the course of the amplification of the Tollmien-Schlichting disturbance waves. In the outer region of the boundary layer longitudinal vortices were observed. The study of boundary layer transition induced by controlled forced disturbances leads to a better understanding of the phenomena by overruling the random natural disturbances of the inflow to the boundary layer along the vertical plate. Author

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE