Accession Number:

AD0283677

Title:

ON PERTURBED BOUNDARY LAYER FLOWS

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE FLUID DYNAMICS RESEARCH LAB

Personal Author(s):

Report Date:

1962-07-01

Pagination or Media Count:

1.0

Abstract:

The study ranges from the fundamental considerations regarding the qualitative and quantitative effects of the boundary layer to the explicit evaluation of these effects in problems of current interest. The theory for the laminar boundary layer with free-stream Mach number ranging from 0 - 2 is first considered. The investigations of the laminar flow are relevant to the studies of the perturbed turbulent boundary layer since the latter are based on an analogy with the laminar model. The analogy is established by ensemble average techniques. However, certain conjectures regarding the nature of the mean flow are required. The associated difficulties are largely removed by a detailed examination of the turbulent boundary layer over a rigid wavy wall and by correlation of the measured and predicted effects of the boundary layer on the surface pressure. These effects are found to be quite significant for certain geometries. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE