Resistance of a grooved surface to parallel flow and cross-flow
- 1 July 1991
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Fluid Mechanics Digital Archive
- Vol. 228, 87-109
- https://doi.org/10.1017/s0022112091002641
Abstract
A study is undertaken of both parallel flow and cross-flow in the viscous sublayer generated by a fluid streaming along a grooved surface, with the aim of clarifying the phenomena that underlie the reduction of turbulent drag by such surfaces. A quantitative characterization of the effectiveness of different groove profiles in retarding secondary cross-flow is given in terms of the difference of two ‘protrusion heights’. Analytical calculations of limit cases and a boundary-element computer code for the analysis of general profiles are illustrated, and several examples are presented and discussed.Keywords
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