Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 48, Issue 10, Pages 1982-1998Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2004.12.019
Keywords
micro-channels; incompressible fluids; gas flow; conventional theory; smooth and rough walls; energy dissipation; transition from laminar to turbulent flow
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We consider the problem of liquid and gas flow in micro-channels under conditions of a small Knudsen and Mach numbers, that correspond to continuum model. Data from the literature on pressure drop in circular, rectangle, triangular and trapezoidal micro-channels with hydrodynamic diameter ranging from 1.01 mu m to 4010 mu m are analyzed. The Reynolds number at transition from laminar to turbulent flow is considered. Attention is paid to comparison between predictions of the conventional theory and experimental data, obtained during the last decade, as well as to discussion of possible sources of unexpected effects which were revealed by a number of previous investigations. (c) 2005 Elsevier Ltd. All rights reserved.
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