Thermohydrodynamics of an evaporating droplet studied using a multiphase lattice Boltzmann method

Ahad Zarghami, H.E.A. van den Akker

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)
58 Downloads (Pure)

Abstract

In this paper, the thermohydrodynamics of an evaporating droplet is investigated by using a single-component pseudopotential lattice Boltzmann model. The phase change is applied to the model by adding source terms to the thermal lattice Boltzmann equation in such a way that the macroscopic energy equation of multiphase flows is recovered. In order to gain an exhaustive understanding of the complex hydrodynamics during evaporation, a single droplet is selected as a case study. At first, some tests for a stationary (non-)evaporating droplet are carried out to validate the method. Then the model is used to study the thermohydrodynamics of a falling evaporating droplet. The results show that the model is capable of reproducing the flow dynamics and transport phenomena of a stationary evaporating droplet quite well. Of course, a moving droplet evaporates faster than a stationary one due to the convective transport. Our study shows that our single-component model for simulating a moving evaporating droplet is limited to low Reynolds numbers.

Original languageEnglish
Article number043310
Number of pages13
JournalPhysical Review E (Statistical, Nonlinear, and Soft Matter Physics)
Volume95
Issue number4
DOIs
Publication statusPublished - 2017

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