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dc.contributor.authorZhang, Chaoyangen_US
dc.contributor.authorZhang, Huien_US
dc.contributor.authorFang, Wen-Zhenen_US
dc.contributor.authorZhao, Yugangen_US
dc.contributor.authorYang, Chunen_US
dc.identifier.citationZhang, C., Zhang, H., Fang, W.-Z., Zhao, Y., & Yang, C. (2020). Axisymmetric lattice Boltzmann model for simulating the freezing process of a sessile water droplet with volume change. Physical Review E, 101(2), 023314-. doi:10.1103/physreve.101.023314en_US
dc.description.abstractDroplet freezing not only is of fundamental interest but also plays an important role in numerous natural and industrial processes. However, it is challenging to numerically simulate the droplet freezing process due to its involving a complex three-phase system with dynamic phase change and heat transfer. Here we propose an axisymmetric lattice Boltzmann (LB) model to simulate the freezing process of a sessile water droplet with consideration of droplet volume expansion. Combined with the multiphase flow LB model and the enthalpy thermal LB model, our proposed approach is applied to simulate the sessile water droplet freezing on both hydrophilic and hydrophobic surfaces at a fixed subcooled temperature. Through comparison with the experimental counterpart, the comparison results show that our axisymmetric LB model can satisfactorily describe such sessile droplet freezing processes. Moreover, we use both LB simulations and analytical models to study the effects of contact angle and volume expansion on the freezing time and the cone shape formed on the top of frozen droplets. The analytical models are obtained based on heat transfer and geometric analyses. Additionally, we show analytically and numerically that the freezing front-to-interface angle keeps nearly constant (smaller than 90°).en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.relation.ispartofPhysical Review Een_US
dc.rights© 2020 American Physical Society (APS). All rights reserved. This paper was published in Physical Review E and is made available with permission of American Physical Society (APS).en_US
dc.titleAxisymmetric lattice Boltzmann model for simulating the freezing process of a sessile water droplet with volume changeen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsLattice-Boltzmann Methodsen_US
dc.subject.keywordsFluid Dynamicsen_US
dc.description.acknowledgementThis work was supported by the Ministry of Singapore via Tier 2 Academic Research Fund (MOE2016-T2-1-114).en_US
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