ISSN Online: 2377-424X
ISBN Print: 978-1-56700-421-2
International Heat Transfer Conference 15
Effects of Evaporation and Condensation on Apparent Thermal Slip
Sinopsis
We capture the effects of evaporation and condensation at menisci on apparent thermal slip lengths for liquids suspended in the Cassie state on ridge-type structured surfaces. Isoflux or isothermal boundary conditions are prescribed at solid-liquid interfaces. Constant heat transfer coefficient or isothermal ones are imposed at menisci. We assume that the gaps between ridges, where the vapor phase resides, are closed systems; therefore, the net rate of heat transfer across menisci is zero. The reduction in apparent thermal slip length due to evaporation and condensation relative to the limiting case of an adiabatic meniscus is quantified.