Viscous Dissipative Flow between Parallel Plates
Increasing degree of miniaturization in devices has led to studies in micro-scale heat and fluid flow, since the thermal behaviour in small devices and in micro-channels may deviate substantially from that of large objects. One of the effects that could play an important role in mirror-channels is t...
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2013
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| Summary: | Increasing degree of miniaturization in devices has led to studies in micro-scale heat and fluid flow, since the thermal behaviour in small devices and in micro-channels may deviate substantially from that of large objects. One of the effects that could play an important role in mirror-channels is the viscous dissipation effect, and described by the Brinkman number. Initially, basic analytical expressions for Nusselt number with the effect of viscous dissipation on the heat transfer between infinite fixed parallel plates, where the focus is on-dynamically and thermally fully developed flow of a Newtonian fluid with constant properties, neglecting the axial heat conduction has been analysed. Thermal boundary conditions considered are: both the plates kept at different constant heat fluxes, both the plates kept at equal constant heat fluxes, and one plate insulted. From the analysis, new expressions for Nusselt numbers have been found, as a function of various definitions of the Brinkman number. |
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