Flow development and pressure drop were investigated both experimentally and computationally for adiabatic single-phase water flow in a single wide, deep, and long rectangular micro-channel at Reynolds numbers ranging from 196 to 2215. The velocity field was measured using a micro-particle image velocimetry system. A three-dimensional computational model was constructed which provided a detailed description of liquid velocity in both the developing and fully developed regions. At high Reynolds numbers, sharp entrance effects produced pronounced vortices in the inlet region that had a profound influence on flow development downstream. The computational model showed very good predictions of the measured velocity field and pressure drop. These findings prove the conventional Navier-Stokes equation accurately predicts liquid flow in micro-channels, and is therefore a powerful tool for the design and analysis of micro-channel heat sinks intended for electronic cooling.
Experimental and Computational Investigation of Flow Development and Pressure Drop in a Rectangular Micro-channel
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Qu, W., Mudawar, I., Lee, S., and Wereley, S. T. (August 10, 2005). "Experimental and Computational Investigation of Flow Development and Pressure Drop in a Rectangular Micro-channel." ASME. J. Electron. Packag. March 2006; 128(1): 1–9. https://doi.org/10.1115/1.2159002
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