Study of the Thermodynamic Properties of a Drop in an Environment under Subcritical Conditions During Evaporation

eng Science and Education Publishing International Journal of Physics 2333-4576 2023-06-06 11 3 97 105 10.12691/ijp-11-3-1 IJP20231131 article Study of the Thermodynamic Properties of a Drop in an Environment under Subcritical Conditions During Evaporation Yendoubouame Lare 1 Koffi Sagna sakobeni@gmail.com, ksagna@univ-lome.tg 1 2 Kodjo S. Apeke 3 Dzidula K. Afodanyi 3 Yendoubé Lare 3 Amah S. d’Almeida 4 Department of Physics, Faculty of Sciences, University of Lomé, Lomé, Togo Ecole Polytechnique de Lomé, University of Lomé, Lomé, Togo Department of Mathematics, Faculty of Sciences, University of Lomé, Lomé, Togo Evaporation of a droplet in hotter environment for the same fluid in subcritical condition has been studied in this work by analyzing the thermodynamic properties. The physical model used is based on Navier-Stokes equations. To simplify the computations, we assumed that the droplet has a spherical symmetry and evolves in quasi steady case and laminar conditions. The study is mainly characterized by the fact that the equation of conservation of momentum is effectively taken into account and that the velocity of the droplet is not always uniform. The analysis of the evolution of temperature, mass flow and velocity in the droplet and in the gaseous phase reveals the presence of discontinuities in the drop towards its boundary and of an unbalanced energy layer attached to the interface when the speed is not uniform in the drop. http://pubs.sciepub.com/ijp/11/3/1/ijp-11-3-1.pdf Navier-stokes equations evaporation droplet temperature density and velocity