Thermal Science 2011 Volume 15, Issue 3, Pages: 773-784
https://doi.org/10.2298/TSCI100427076N
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Evaporation of a binary liquid film by forced convection
Nasr Abdelaziz
Debbissi Chokri
Nasrallah Ben Sassi
This paper deals with a numerical analysis of the evaporation of a thin
binary liquid film by forced convection inside a channel constituted by two
parallel plates. The first plate is externally insulated and wetted by a thin
water ethylene glycol film while the second is dry and isothermal. The liquid
mixture consists of water (the more volatile component) and ethylene glycol
while the gas mixture has three components: dry air, water vapour and
ethylene-glycol vapour. The set of non linear and coupled equations
expressing the conservation of mass, momentum, energy and species in the
liquid and gas mixtures is solved numerically using a finite difference
method. Results concerns with the effects of inlet ambience conditions and
the inlet liquid concentration of ethylene glycol on the distribution of the
temperature, concentrations profiles and the axial variation of the
evaporation rate of species i.
Keywords: Binary liquid film, evaporation, forced convection, combined heat and mass transfer