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Title: Dynamic Characterization of Permeabilities and Flows in Microchannels
Author: Castro, M.
Bravo Gutiérrez, M. E.
Hernández Machado, Aurora
Corvera Poiré, Eugenia
Keywords: Física de partícules
Particle physics
Issue Date: 26-Nov-2008
Publisher: American Physical Society
Abstract: We make an analytical study of the nonsteady flow of Newtonian fluids in microchannels. We consider the slip boundary condition at the solid walls with Navier hypothesis and calculate the dynamic permeability, which gives the system's response to dynamic pressure gradients. We find a scaling relation in the absence of slip that is broken in its presence. We discuss how this might be useful to experimentally determine by means of microparticle image velocimetry technology whether slip exists or not in a system, the value of the slip length, and the validity of Navier hypothesis in dynamic situations.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2008, vol. 101, num. 22, p. 224501
Related resource:
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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