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Application of a high density ratio lattice-Boltzmann model for the droplet impingement on flat and spherical surfaces

Zhang, D, Papadikis, K and Gu, S (2014) Application of a high density ratio lattice-Boltzmann model for the droplet impingement on flat and spherical surfaces International Journal of Thermal Sciences, 84 (Octobe). pp. 75-85.

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Abstract

In the current study, a 3-dimensional lattice Boltzmann model which can tolerate high density ratios is employed to simulate the impingement of a liquid droplet onto a flat and a spherical target. The four phases of droplet impact on a flat surface, namely, the kinematic, spreading, relaxation and equilibrium phase, have been obtained for a range of Weber and Reynolds numbers. The predicted maximum spread factor is in good agreement with experimental data published in the literature. For the impact of the liquid droplet onto a spherical target, the temporal variation of the film thickness on the target surface is investigated. The three different temporal phases of the film dynamics, namely, the initial drop deformation phase, the inertia dominated phase and the viscosity dominated phase are reproduced and studied. The effect of the droplet Reynolds number and the target-to-drop size ratio on the film flow dynamics is investigated.

Item Type: Article
Authors :
AuthorsEmailORCID
Zhang, DUNSPECIFIEDUNSPECIFIED
Papadikis, KUNSPECIFIEDUNSPECIFIED
Gu, SUNSPECIFIEDUNSPECIFIED
Date : 6 June 2014
Funders : UK Engineering and Physical Sciences Research Council (EPSRC), EU FP7
Identification Number : https://doi.org/10.1016/j.ijthermalsci.2014.05.002
Copyright Disclaimer : Copyright © 2016 Elsevier B.V. or its licensors or contributors.
Uncontrolled Keywords : Multiphase flow, Lattice Boltzmann, High-density-ratio, Droplet impact, Spread factor, Film thickness
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 10:59
Last Modified : 28 Mar 2017 10:59
URI: http://epubs.surrey.ac.uk/id/eprint/810539

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