Abstract
The present study aims to understand the evaporation dynamics of heavy hydrocarbon liquid (cyclohexane) from a circular well cavity under the influence of corona wind. The study explores the effect of corona wind on the modification of vapor phase transport and the evaporation rate from the circular well. Particle image velocimetry is used to characterize the velocity field of the corona wind generated by a needle and plate configuration. Digital holography interferometry is used to decipher the mole fraction distribution of the vapor cloud. Circular well cavities of radius 2.0, 2.5, and 4 mm are studied. The effect of corona wind on the evaporation of different sized well cavities increases with an increase in actuation voltage. The side wall of the cavities influences the distribution of the vapor cloud due to the interaction with the incoming corona wind. More than ten times enhancement of evaporation is observed at 10 kV excitation voltage setting of the corona wind generator. The corona jet-assisted evaporation can be very useful in thin-film evaporative cooling due to its simplicity in design and superior performance.
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