Large Parallel Plate Flow without Viscous Heating Uniform Surface Flux

9 Large Parallel Plate Flow without Viscous Heating Uniform Surface Flux 

The velocity profile with slip flow boundary condition for this can be derived from N-S equation as 

The Nusselt number for a parallel plate ehannel based on the equivalent diameter = 2H is defined as 

It may be noted that the heat transfer eoefficient in microchannels is defined in terms of surface temperature rather than fluid temperature at the surface. The surface temperature can 

Assuming invariant density and specific heat with respect to y, the mean temperature is defined as 

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