Saffman, P. G. (1977) Dependence of effective slip on wall roughness in dilute polymer solutions. Physics of Fluids, 20 (10, Pa). S272-S275. ISSN 0031-9171 http://resolver.caltech.edu/CaltechAUTHORS:SAFpof77
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A hypothesis is made for the modification of a complete turbulence model to take account of a dilute polymer concentration. The equations are integrated in the wall layer and give the effective slip u*DeltaB as functions of wall roughness and empirical polymer properties, where u* is the friction velocity and DeltaB is the change of the constant in the logarithmic law of the wall. Results in qualitative agreement with experiment are found.
|Additional Information:||Copyright © 1977 American Institute of Physics. I wish to thank Dr. Fausto Milinazzo for invaluable help with the numerical solution of the differential equations. This work was supported by the Energy Research and Development Administration (AT 04-3-767).|
|Subject Keywords:||SLIP VELOCITY, TURBULENT FLOW, ADDITIVES, BOUNDARY LAYERS, DRAG Q1, POLYMERS, ROUGHNESS, WALLS|
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|Deposited By:||Archive Administrator|
|Deposited On:||15 Apr 2008|
|Last Modified:||26 Dec 2012 09:57|
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