Evaporation of a single droplet of a binary mixture of ethanol/iso-octane was numerically studied. Liquid/gas interface was tracked using VOF multiphase model. As ethanol and iso-octane form a highly non-ideal mixture, vapour-liquid-equilibrium (VLE) calculations were made using UNIFAC group contribution method. Source terms arising due to interfacial mass transfer are implemented in the continuity, momentum, energy and species equations. In this study, commercial CFD solver, Ansys Fluent 12.1 was used. VLE calculations and the source terms were implemented using user defined functions. A non-isothermal flow condition with droplet and surrounding medium at different temperatures was studied. Time history of temperature, evaporation rate, droplet size and shape were studied and reported. A parametric study of droplet composition and Reynolds number has been performed and reported in this study. Copyright © 2011 by ASME.

Raja Banerjee

Department of Mechanical and Aerospace Engineering

R. Gopinath

Indian Institute of Technology Hyderabad (IITH) is a premier institute of science and technology established in 2008. IITH has been consistently ranked in the&nbsp;<a href="https://iith.ac.in/reports/" rel="noopener noreferrer">top 10 institutes</a>&nbsp;in India for Engineering&nbsp;<a href="https://www.nirfindia.org/2021/EngineeringRanking.html" rel="noopener noreferrer" target="_blank">according to NIRF</a>&nbsp;making it one of the most coveted schools for science and technology in the country.

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