Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Evaluation of droplet evaporation models for gas-liquid flow simulations
Submission Author:
Abgail Paula Pinheiro , MG
Co-Authors:
João Marcelo Vedovotto, Aristeu Silveira Neto, Abgail Paula Pinheiro
Presenter: Abgail Paula Pinheiro
doi://10.26678/ABCM.COBEM2017.COB17-1455
Abstract
Classical droplet evaporation models, including equilibrium and non-equilibrium formulations, that are usually used in spray combustion calculations, are evaluated in this study through comparison of diameter and temperature evolution predictions with experimental data. Furthermore, the effects of ambient pressure variation on the evaporation of a droplet are investigated. The physical model consists of an isolated single-component droplet vaporizing in gas environmental with uniform temperature and pressure, representing an ideal model of the physical phenomena involved in the diluted regions of a spray. Transient droplet heating effects and variable thermophysical properties, for both phases, are considered. The results reveal that, as expected, the non-equilibrium effects are insignificant for the simulated initial diameter, slip velocity and ambient temperature. It is additionally observed that ambient pressure variation from 1 atm to 10 atm does not enhance non-equilibrium effects.
Keywords
Evaporation, Droplet, Lagrangian
