Understanding the evaporation process in nanoporous-membrane based cooling devices

Our recent article on evaporation from nanoporous membranes has been accepted for publication in the Physical Review Fluids. Thermal management is becoming a prominent concern in the semiconductor industry due to the ever-increasing power density in modern electronic devices. Thin film evaporation enabled by nanoporous membranes is a promising technology that has, in recent years, been proven to be capable of high heat-flux thermal management. In this paper, we numerically study the evaporation process corresponding to different operating conditions using the DSMC method. Results show that the net evaporative mass flux is determined by an interplay between physical effects, quantified by the Knudsen number, porosity, evaporation coefficient, and meniscus shape.

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