Lattice Boltzmann model for thermal behavior of a droplet on the solid surface

Taghilou, Mohammad; Rahimian, Mohammad Hassan

doi:10.1016/j.ijthermalsci.2014.06.006

Cited by 20 publications

(7 citation statements)

References 21 publications

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“…Unlike other numerical methods, LBM predicts the evolution of particle distribution function and calculates the macroscopic variables by taking moment to the distribution function [24][25][26][27][28][29]. LBM starts with the Boltzmann equation, discretised in space and time, given as:…”

Section: Double Distribution Function Lattice Boltzmann Methodsmentioning

confidence: 99%

Recent progress on lattice Boltzmann simulation of nanofluids: A review

Sidik

Mamat

2015

International Communications in Heat and Mass Transfer

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Section: Double Distribution Function Lattice Boltzmann Methodsmentioning

confidence: 99%

Recent progress on lattice Boltzmann simulation of nanofluids: A review

Sidik

Mamat

2015

International Communications in Heat and Mass Transfer

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“…Recently, the Lattice Boltzmann Method (LBM) has met with significant success for numerical simulation and modelling of many classical and complex flows [7][8][9][10]. The LBM has been used recently to investigate flows under external magnetic field.…”

Section: Magnetic Fieldmentioning

confidence: 99%

Conjugate Effects of Buoyancy and Magnetic Field on Heat and Fluid Flow Pattern at Low-to-Moderate Prandtl Numbers

Djebali

Abbassi

Rouahi

2016

ILCPA

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This study aims to present a numerical investigation of unsteady two-dimensional natural convection of an electrically conducting fluid in a square medium under externally imposed magnetic field. A temperature gradient is applied between the two opposing side walls parallel to ydirection, while the floor and ceiling parallel to x-direction are kept adiabatic. The coupled momentum and energy equations associated with the Lorentz 'decelerating' force as well as the buoyancy force terms are solved using the single relaxation lattice Boltzmann (LB) approach. The flow is characterized by the Rayleigh number Ra (10 3 -10 6 ), the Prandtl number Pr (0.01-10), the Hartman number Ha (0-100) determined by the strength of the imposed magnetic field and its tilt angle from x-axis ranging from 0° to 90°. The changes in the buoyant flow patterns and temperature contours due to the effects of varying the controlling parameters and associated heat transfer are examined. It was found that the developed thermal LB model gives excellent results by comparison with former experimental and numerical findings. Starting from the values 10 5 of the Rayleigh number Ra and Ha=0, the flow is unsteady multicellular for low Prandtl number typical of liquid metal. Increasing gradually Pr, the flow undergoes transition to steady bicellular. The transition occurs at a threshold value between Pr=0.01 and 0.1. Increasing more the Prandtl number, the flow structure is distorted due to the viscous forces which outweigh the buoyancy forces and a thermal stratification is clearly established. For high Hartman number, the damping effects suppress the unsteady behaviour and results in steady state with extended unicellular pattern in the direction of Lorentz force and the heat transfer rate is reduced considerably.

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“…The results indicated that the current LBM approach could be used as a reliable way to study fluidic control on heterogeneous surfaces and other wetting related subjects. Mohammad Taghilou [24] et al applied a model which uses the Cahn-Hilliard diffuse interface theory, to capture the liquid-gas interface. The passive scalar model is used to simulate the thermal effects.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the droplet evaporation process on local heated substrates with different wettability

et al. 2020

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Marangoni effect is one of the critical factors in the droplet evaporation process, which is caused by surface tension gradient in the droplet interface. In this study, local heating is adopted to provide a more complicated temperature distribution on the droplet surface, and a detailed numerical investigation is carried out to address the effect of Marangoni flow on the droplet evaporation behaviour. Results show that asymmetric heat source position could result in the droplet morphology being asymmetric, especially for droplets on super-hydrophilic surfaces. The evaporation rate could be affected both by the heat source position and the droplet contact angle. When placed on a smooth substrate, the droplet will slip horizontally as a result of the asymmetric heating condition. The slipping behaviour is affected by both the heat source position and the surface wettability.

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Lattice Boltzmann model for thermal behavior of a droplet on the solid surface

Cited by 20 publications

References 21 publications

Recent progress on lattice Boltzmann simulation of nanofluids: A review

Recent progress on lattice Boltzmann simulation of nanofluids: A review

Conjugate Effects of Buoyancy and Magnetic Field on Heat and Fluid Flow Pattern at Low-to-Moderate Prandtl Numbers

Investigation on the droplet evaporation process on local heated substrates with different wettability

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