Modeling and simulation of droplet evaporation using a modified Cahn–Hilliard equation

Hyun Geun Lee, Junxiang Yang, Sangkwon Kim and Junseok Kim

Applied Mathematics and Computation, 2021, vol. 390, issue C

Abstract: In this paper, we propose a mathematical model, its numerical scheme, and some computational experiments for droplet evaporation. In order to model the evaporation, a classical Cahn–Hilliard equation with an interfacial evaporation mass flux term is proposed. An unconditionally gradient stable scheme is used to discretize the governing equation, and the multigrid method is applied to solve the resulting system. The proposed model is first validated via a proper interfacial parameter ϵ, and then, the effect of evaporation rate and effect of contact angle on volume and surface area changes are investigated. The numerical results indicate that the dynamics of evaporation are dependent on the contact angle on a solid substrate.

Keywords: Droplet evaporation; Modified Cahn–Hilliard equation; Contact angle (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:apmaco:v:390:y:2021:i:c:s0096300320305464

DOI: 10.1016/j.amc.2020.125591

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