Lattice Boltzmann simulation of MHD natural convection in a nanofluid-filled enclosure with non-uniform heating on both side walls

Mejri, Imen; Mahmoudi, Ahmed; Abbassi, Mohamed Ammar; Omri, Ahmed

doi:10.1109/iccmrea.2014.6843797

Cited by 13 publications

(18 citation statements)

References 22 publications

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“…To obtain F all variables must become dimensionless with the lattice units. So, the external force appears for LBM as follows [39]:…”

Section: 21mentioning

confidence: 99%

“…Also, according to Brinkman model the viscosity of a mixture containing a dilute suspension of small rigid spherical particles can be obtained from [39]:…”

Section: Modeling Of Nanofluidmentioning

confidence: 99%

“…It is well known that addition of nanoparticles [38,39], magnetic field intensity [38][39][40] and obstacle [41] lead to a decrease in the stream function and heat transfer rate, so in this study, we aim to define and observe the combined effect of all above-mentioned features. On the other hand, nanoparticles higher conductivity, and obstacle temperature gradient are meant to increase the heat transfer rate.…”

Section: Introductionmentioning

confidence: 99%

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Numerical simulation of Cu-water nanofluid magneto-hydro-dynamics and heat transfer in a cavity containing a circular cylinder of different size and positions

Ahrara¹,

Djavareshkianb²,

Ataiyanc³

2017

IJHT

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In the present study, a nanofluid filled cavity with sinusoidal temperature boundary condition, under the influence of an inclined magnetic field is investigated numerically. The LBM method is applied to simulate the Cu-Water nanofluid flow around an average temperature circular cylinder. In this study, the different braking manners of the magnetic field and the obstacle are compared for different field intensities and directions and various obstacle sizes and positions. The flow and heat transfer behavior of the nanofluid were observed for different Rayleigh numbers (103-106), Hartmann numbers (0-90), nanoparticles' volume fraction (0-6 %), magnetic field direction = (0-90o) and obstacle aspect ratios (0.05, 0.1 and 0.2) and positions (0-8). The results indicated that the influence of nanoparticles for this geometry and boundary condition is highly dependent on the Rayleigh and Hartmann numbers. Also, it was shown that for lower Ra numbers, the obstacle with an aspect ratio of 0.1 presents better heat transfer rate; while for higher Ra numbers the obstacle size is much less important than its position.

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“…To obtain F all variables must become dimensionless with the lattice units. So, the external force appears for LBM as follows [39]:…”

Section: 21mentioning

confidence: 99%

“…Also, according to Brinkman model the viscosity of a mixture containing a dilute suspension of small rigid spherical particles can be obtained from [39]:…”

Section: Modeling Of Nanofluidmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical simulation of Cu-water nanofluid magneto-hydro-dynamics and heat transfer in a cavity containing a circular cylinder of different size and positions

Ahrara¹,

Djavareshkianb²,

Ataiyanc³

2017

IJHT

View full text Add to dashboard Cite

show abstract

“…The found results show that the heat transfer and fluid flow depends strongly upon the direction of magnetic field. Mejri et al [15] studied magnetic field effect on natural convection in a nanofluid filled enclosure with nonuniform heating on both side walls. The authors used lattice Boltzmann method to solve the coupled equations of flow and temperature fields.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Conduction-Radiation Heat Transfer With Variable Thermal Conductivity and Variable Refractive Index: Application of the Lattice Boltzmann Method

Mahmoudi¹,

Mejri²

2015

IJHT

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The effect of variable thermal conductivity and variable refractive index on transient conduction and radiation heat transfer in a planar medium is investigated. Thermal conductivity of the medium is assumed to vary linearly with temperature, while the other thermo-physical properties are assumed constant. The radiative transfer equation and the nonlinear energy equation are solved using lattice Boltzmann method (LBM). The effects of various parameters are studied. The LBM results are compared with those available in literature and a good agreement is found.

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“…The obtained results demonstrate that lattice Boltzmann method is an appropriate method for conductionradiation problem. Mejri et al [9] used lattice Boltzmann method to study MHD natural convection in a nanofluid filled enclosure. The obtained results show that the heat transfer is controlled by the thermal boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

LBM Simulation of Heat Transfer in Solid Oxide Fuel Cell

Mejri¹,

Mahmoudi²,

Abbassi³

et al. 2016

IJHT

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In this paper, lattice Boltzmann method is used to study the radiative effect on the temperature distribution inside the solid oxide fuel cell (SOFC). A two-dimensional model takes into account the ohmic losses in the different components of the SOFC is considered in this study. Schuster-Schwarzschild method is applied in order to model the radiative transfer in the electrolyte optically thin, whereas Rosseland method is applied for modelization the radiative transfer in the electrodes optically thick. Results show that the highest temperature is obtained in the electrolyte. Also, the radiative effect does not change the temperature distribution inside the SOFC; there is only a temperature reduction.

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Lattice Boltzmann simulation of MHD natural convection in a nanofluid-filled enclosure with non-uniform heating on both side walls

Cited by 13 publications

References 22 publications

Numerical simulation of Cu-water nanofluid magneto-hydro-dynamics and heat transfer in a cavity containing a circular cylinder of different size and positions

Numerical simulation of Cu-water nanofluid magneto-hydro-dynamics and heat transfer in a cavity containing a circular cylinder of different size and positions

Analysis of Conduction-Radiation Heat Transfer With Variable Thermal Conductivity and Variable Refractive Index: Application of the Lattice Boltzmann Method

LBM Simulation of Heat Transfer in Solid Oxide Fuel Cell

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