Hybrid lattice Boltzmann finite difference model for simulation of phase change in a ternary fluid

•The CH equation is extended to a ternary fluid with phase-change phenomenon.•A lattice Boltzmann model is proposed consisting of three distribution functions.•The model simulates phase change whether the fluid is in contact with its vapor.•The phase-field variable of the vapor changes smoothly from...

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Vydané v:International journal of heat and mass transfer Ročník 127; s. 704 - 716
Hlavní autori: Haghani Hassan Abadi, Reza, Rahimian, Mohammad Hassan
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Oxford Elsevier Ltd 01.12.2018
Elsevier BV
Predmet:
Computational fluid dynamics
Computer simulation
Distribution functions
Finite difference method
Fluid dynamics
Fluid flow
Fluid mechanics
Heat flux
Heat transfer
Incompressible flow
Incompressible fluids
Lattice Boltzmann method
Mathematical analysis
Multiphase flow
Phase change
Phase transitions
Phase-change process
Ternary fluids
Ternary systems
Thermodynamics
Phase-change process
Lattice Boltzmann method
Multiphase flow
Ternary fluids
ISSN:0017-9310, 1879-2189
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Popis
Shrnutí:•The CH equation is extended to a ternary fluid with phase-change phenomenon.•A lattice Boltzmann model is proposed consisting of three distribution functions.•The model simulates phase change whether the fluid is in contact with its vapor.•The phase-field variable of the vapor changes smoothly from 0 to 1 in ternary system. In this paper, a hybrid lattice Boltzmann finite difference model based on the phase-field lattice Boltzmann and finite difference approaches is proposed to model phase-change phenomena in a ternary system. The system contains three immiscible incompressible fluids and the phase-change process happens at the interfaces of the fluids. Three distribution functions are used in the model; two of which are used to track the interfaces among three fluids and the other one is employed to recover the hydrodynamic properties (pressure and momentum). A sharp-interface energy equation is solved based on a finite difference approach and the net heat flux at the interface is considered as the driving force for the phase-change process. The proposed model is validated against available results and good agreement is found.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2018.07.071