is well predicted by existing
literature. The plug is then allowed to move through the heated section maintained at constant wall
temperature (lesser than the saturation temperature of methanol). The drained film now starts evaporating
rapidly, drastically affecting the bulk transport behavior. High resolution videography, coupled with
laser confocal microscopy provides vital bulk as well as local information, including time-varying plug
length, film thickness and local dewetting behavior near the contact line. Experimental results obtained
for different wall temperatures and different initial L/D ratios of liquid plug suggests that the Taylor’s law
for predicting drainage characteristics under adiabatic flow conditions is valid, even for cases where there
is a continuous evaporation of thin-film. The study thus provides a framework for modeling evaporative
flux based on simple hydrodynamic theory of film drainage