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Numerical computation of fluid flow and heat transfer in microchannels. (English) Zbl 1008.76519
Summary: Three-dimensional fluid flow and heat transfer phenomena inside heated microchannels is investigated. The steady, laminar flow and heat transfer equations are solved using a finite-volume method. The numerical procedure is validated by comparing the predicted local thermal resistances with available experimental data. The friction factor is also predicted in this study. It was found that the heat input lowers the frictional losses, particularly at lower Reynolds numbers. At lower Reynolds numbers the temperature of the water increases, leading to a decrease in the viscosity and hence smaller frictional losses.

MSC:
76M12 Finite volume methods applied to problems in fluid mechanics
76D99 Incompressible viscous fluids
80A20 Heat and mass transfer, heat flow (MSC2010)
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