A parametric study on the droplet detachment process from the ceiling under the effect of gravity
ISSN: 0264-4401
Article publication date: 14 December 2018
Issue publication date: 7 March 2019
Abstract
Purpose
The purpose of this paper is to numerically investigate the effect of various parameters such as density ratio, surface wettabilities and Weber number on the droplet dripping and detachment process.
Design/methodology/approach
By using algebraic volume of fluid method, the governing equations are solved using a collocated finite volume approach in two-dimensions.
Findings
The results indicate that, for small densities of droplet, it adheres to the surface except when the surface is hydrophobic, while an increase in Weber number or presence of an additional droplet in the vicinity led to detachment.
Originality/value
The paper explores various characteristics of a droplet when two competing forces, namely, gravity and surface tension, act simultaneously. The detachment is observed for a given initial droplet size, as it becomes denser in an uniform gravitational field. The effect of droplet affinity for two droplets is also presented using the simulations.
Keywords
Acknowledgements
This study is funded by a grant from the DAE-BRNS, Government of India.
Citation
Manik, J., Dalal, A. and Natarajan, G. (2019), "A parametric study on the droplet detachment process from the ceiling under the effect of gravity", Engineering Computations, Vol. 36 No. 2, pp. 445-465. https://doi.org/10.1108/EC-11-2017-0425
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited