Journal ArticleDOI
Deformation and breakup of a pendant drop with solidification
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TLDR
In this paper, the authors present a numerical simulation of deformation and breakup of a solidifying liquid drop pendant from a cold solid surface by an axisymmetric front-tracking method combined with an interpolation technique for enforcing the no-slip velocity boundary at the solid-fluid interface.About:
This article is published in International Journal of Heat and Mass Transfer.The article was published on 2018-07-01. It has received 17 citations till now. The article focuses on the topics: Drop (liquid) & Ohnesorge number.read more
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Simulation and experiment on supercooled sessile water droplet freezing with special attention to supercooling and volume expansion effects
TL;DR: In this paper, the freezing process of supercooled water droplets on cold plates is studied experimentally and numerically, and a numerical model that considers both the supercooling effect on physical properties and the volume expansion effect on the droplet freezing profile is established to simulate the droplets freezing behaviors using the Solidification/Melting model.
Journal ArticleDOI
Numerical study of deformation and breakup of a multi-core compound droplet in simple shear flow
TL;DR: In this paper, numerical simulation results of deformation and breakup of a multi-core compound droplet are presented, where the outer interface is deformed with two inner droplets accumulating at the center whereas in the other non-breakup type (type 2), the inner droppers move to the two furthest ends.
Journal ArticleDOI
Deformation and breakup of a double-core compound droplet in an axisymmetric channel
TL;DR: In this paper, the authors investigated the finite deformation and breakup of a double-core compound droplet in an external flow confined in an axisymmetric channel, where the inner droplet first moves away from and then moves back to the center, resulting in the non-breakup of the outer droplet.
Journal ArticleDOI
A numerical study of a liquid drop solidifying on a vertical cold wall
Vinh Nguyen Duy,Truong V. Vu +1 more
TL;DR: In this paper, the authors present the fully resolved two-dimensional simulations of phase change heat transfer problem by a front-tracking/finite difference method and investigate the tip shift, height and shape of the solidified drop under the influences of various parameters such as the Prandtl number Pr, the Stefan number St, the Bond number, the Ohnesorge number Oh, and the density ratio of the liquid to liquid phases ρsl.
Journal ArticleDOI
Containerless solidification of a droplet under forced convection
Truong V. Vu,Quan H. Luu +1 more
TL;DR: In this article, the authors present the front-tracking-based results of containerless solidification of a liquid droplet with laminar forced convection, where the droplet starts solidifying from a nucleus of solid phase assumed to be located at its bottom.
References
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Journal ArticleDOI
Level set methods: an overview and some recent results
Stanley Osher,Ronald Fedkiw +1 more
TL;DR: The level set method is couple to a wide variety of problems involving external physics, such as compressible and incompressible flow, Stefan problems, kinetic crystal growth, epitaxial growth of thin films, vortex-dominated flows, and extensions to multiphase motion.
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A front-tracking method for the computations of multiphase flow
Gretar Tryggvason,Bernard Bunner,Asghar Esmaeeli,Damir Juric,Nabeel Al-Rawahi,Warren Tauber,Jaehoon Han,Selman Nas,Y.-J. Jan +8 more
TL;DR: In this paper, a front-tracking method for multiphase flows is presented, which is based on writing one set of governing equations for the whole computational domain and treating the different phases as one fluid with variable material properties.
Journal ArticleDOI
A Variational Level Set Approach to Multiphase Motion
TL;DR: In this paper, a coupled level set method for the motion of multiple junctions (of, e.g., solid, liquid, and grain boundaries), which follows the gradient flow for an energy functional consisting of surface tension and bulk energies, is developed.
Journal ArticleDOI
Models for the growth of rime, glaze, icicles and wet snow on structures
TL;DR: In this paper, basic principles of modelling of icing caused by freezing precipitation, cloud droplets and wet snow, as well as simulation of icicle growth, are presented, with an emphasis on estimating structural design iceloads and solving operational icing problems.
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A fundamental understanding of factors affecting frost nucleation.
Byeongchul Na,Ralph L. Webb +1 more
TL;DR: Theoretical analysis of the nucleation process for frost formation on a cold surface shows that the air at the cold surface should be supersaturated in order for frost nucleation to occur.