Turbulent drag reduction research at NASA langley: progress and plans

The paper summarizes the status of the ongoing NASA Langley research program in the area of turbulent skin friction reduction. The discussion is organized under the general headings of (a) approaches which work, (b) approaches which may work, and (c) approaches which evidently do not work, although...

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Bibliographic Details
Published in:International Journal of Heat and Fluid Flow 1988, Vol.9 (3), p.266-277
Main Authors: Wilkinson, S.P., Anders, J.B., Lazos, B.S., Bushnell, D.M.
Format: Article
Language:English
Subjects:
drag
Exact sciences and technology
Fluid dynamics
friction
Fundamental areas of phenomenology (including applications)
Physics
research and development
turbulent boundary layer
turbulent drag reduction
Turbulent flows, convection, and heat transfer
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Summary:The paper summarizes the status of the ongoing NASA Langley research program in the area of turbulent skin friction reduction. The discussion is organized under the general headings of (a) approaches which work, (b) approaches which may work, and (c) approaches which evidently do not work, although many of the latter provide turbulence alteration and control (but not net drag reduction). Riblets are currently in the flight application stage, whereas large-eddy breakup devices are still under laboratory study, particularly in regard to device drag minimization and performance at flight device Reynolds numbers. A new generation of wall region approaches offers promise, but the research is still in an early stage.
ISSN:0142-727X
1879-2278
DOI:10.1016/0142-727X(88)90037-9