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Wall mass transfer and pressure gradient effects on turbulent skin frictionThe effects of mass injection and pressure gradients on the drag of surfaces were studied theoretically with the aid of boundary-layer and Navier-Stokes codes. The present investigation is concerned with the effects of spatially varying the injection in the case of flat-plate drag. Effects of suction and injection on wavy wall surfaces are also explored. Calculations were performed for 1.2 m long surfaces, one flat and the other sinusoidal with a wavelength of 30.5 cm. Attention is given to the study of the effect of various spatial blowing variations on flat-plate skin friction reduction, local skin friction coefficient calculated by finite difference boundary-layer code and Navier-Stokes code, and the effect of phase-shifting sinusoidal mass transfer on the drag of a sinusoidal surface.
Document ID
19840034660
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Watson, R. D.
(NASA Langley Research Center Hampton, VA, United States)
Balasubramanian, R.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1984
Publication Information
Publication: AIAA Journal
Volume: 22
ISSN: 0001-1452
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
84A17447
Distribution Limits
Public
Copyright
Other

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