Abstract
A mathematical model of the hydrodynamic and heat transfer performances of two -phase flow (gas-liquid) in thin film region of micro channel is proposed. For the formulation of modeli ng, the flow of the vapor phase and the shear stress at the liquid-vapor interface are considered. In this work, disjoining pressure and capillary force which drive the liquid flow at the liquid-vapor interface in thin film region arc adopted also. Using the model, the effects of the variations of channel height and heat flux on the flow and heat transfer characteristics are investigated. Results show that the influence of variation of vapor pressure on the liquid film flow is not negligible. The heat flux in thin-film region is the most important operation factor of micro cooler system<br/>
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