Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
DYNAMICS OF EVAPORATING LIQUID DROPLETS: THE ROLE OF DRAG COEFFICIENT CALCULATION
Submission Author:
Jamille Késsia Araújo Martins , MG
Co-Authors:
Jamille Késsia Araújo Martins, Abgail Paula Pinheiro, João Marcelo Vedovotto
Presenter: Jamille Késsia Araújo Martins
doi://10.26678/ABCM.COBEM2019.COB2019-1843
Abstract
Appropriate computation of droplet drag coefficient is essential for determing the dynamics of a spray flow. Depending on the situation, this drag coefficient might have to be corrected in order to consider evaporation and deformation effects. Therefore, the present study aims to evaluate empirical correlation for drag coefficient calculation that have already been proposed in the literature by means of numerical simulations. First, for model validation, droplet motion and evaporation is computed considering the drag coefficient of a rigid sphere. Then, the influence of transfer processes and non-sphericity on the drag coefficient is investigated. The results reveal that while evaporation reduces the drag coefficient, the deformation increases it.
Keywords
drag coefficient, droplet motion, Evaporation, Deformation
