The 22st Annual International Conference on Mechanical Engineering-ISME2014 , 2014-04-22

Title : ( Numerical Simulation of Coalescence of Two Stationary Droplets Using Lattice Boltzmann Method )

Authors: razieh abedini , احسان امیری راد , Mohammad Passandideh Fard ,

Citation: BibTeX | EndNote

Abstract

In this paper, the two dimensional coalescence of two stationary head-on droplets with equal diameters are numerically investigated using the lattice Boltzmann method (LBM). Droplets are considered to have a circular shape with a specified gap size between their free surfaces. Coalescence is initiated when two droplets come into contact and form a liquid bridge, which then starts to grow due to surface tension. It is shown that for the coalescence to occur, the gap size has to be less than a certain limit called critical gap size. Finally, the effects of important parameters including surface tension, density and viscosity ratio of two phases on the critical gap size are studied. The results show that increasing the surface tension value and vapor to liquid density ratio increases the critical gap size. In contrast, increasing the kinematic viscosity of surrounding vapor decreases the critical gap size.

Keywords

, Stationary coalescence phenomenon, Critical gap size, Surface tension, Lattice Boltzmann method
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@inproceedings{paperid:1043908,
author = {Abedini, Razieh and احسان امیری راد and Passandideh Fard, Mohammad},
title = {Numerical Simulation of Coalescence of Two Stationary Droplets Using Lattice Boltzmann Method},
booktitle = {The 22st Annual International Conference on Mechanical Engineering-ISME2014},
year = {2014},
location = {اهواز, IRAN},
keywords = {Stationary coalescence phenomenon; Critical gap size; Surface tension; Lattice Boltzmann method},
}

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%0 Conference Proceedings
%T Numerical Simulation of Coalescence of Two Stationary Droplets Using Lattice Boltzmann Method
%A Abedini, Razieh
%A احسان امیری راد
%A Passandideh Fard, Mohammad
%J The 22st Annual International Conference on Mechanical Engineering-ISME2014
%D 2014

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