Two-phase lattice Boltzmann simulation of natural convection in a Cu-water nanofluid-filled porous cavity: Effects of thermal boundary conditions on heat transfer and entropy generation

Kashyap, Dhrubajyoti; Dass, Anoop K.

doi:10.1016/j.apt.2018.07.020

Cited by 46 publications

(13 citation statements)

References 37 publications

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“…Among its industrial applications is to increase thermal efficiency in heat exchangers (Bahmani et al, 2018;Bamdad and Ashorynejad, 2015;Leonardi et al, 2012;Goodarzi et al, 2016). Regarding the improved efficiency of LBM by engineers, using it for two-phase flow simulation is becoming more common, and its results are consistent with experimental Lattice Boltzmann method findings (Kamali et al, 2012;Huang et al, 2017;Kashyap and Dass, 2018;Kharmiani and Passandideh-Fard, 2018;Yazdi et al, 2018;Nemati et al, 2018). There are some studies on the cavity and enclosure, using the LBM (Jourabian et al, 2012;Moufekkir et al, 2013;Karimipour et al, 2014;Bakar et al, 2016;Safaei et al, 2018).…”

Section: Introductionmentioning

confidence: 89%

Lattice Boltzmann method to simulate convection heat transfer in a microchannel under heat flux

Mozaffari

D’Orazio

Karimipour

et al. 2019

HFF

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Purpose The purpose of this paper is to improve the lattice Boltzmann method’s ability to simulate a microflow under constant heat flux. Design/methodology/approach Develop the thermal lattice Boltzmann method based on double population of hydrodynamic and thermal distribution functions. Findings The buoyancy forces, caused by gravity, can change the hydrodynamic properties of the flow. As a result, the gravity term was included in the Boltzmann equation as an external force, and the equations were rewritten under new conditions. Originality/value To the best of the authors’ knowledge, the current study is the first attempt to investigate mixed-convection heat transfer in an inclined microchannel in a slip flow regime.

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Section: Introductionmentioning

confidence: 89%

Lattice Boltzmann method to simulate convection heat transfer in a microchannel under heat flux

Mozaffari

D’Orazio

Karimipour

et al. 2019

HFF

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“…Abro et al [55] scrutinized the role of MHD on treatment of ferrofluid. Kashyap and Dass [56] assessed the effect of heat element on the natural convection within a permeable cavity accumulated with nanoliquid. Their achievements showed that the uniform linear heating was F I G U R E 1 Container with hybrid nanomaterial utilizing permeable zone specified as best methods.…”

Section: Introductionmentioning

confidence: 99%

Modeling approach for nanomaterial convective migration with inclusion of Lorentz force

Rothan

2021

Z Angew Math Mech

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Hybrid nanomaterial migration through a permeable container has been simulated in current article with considering buoyancy effect. The inner surface absorbs constant heat flux and horizontal magnetohydrodynamic (MHD) is imposed. To employ the role of new fluid, homogeneous approach formulation was applied definition of stream function creates simpler form of equations. CVFEM was incorporated to model the equations. Entropy generations owing to various factors were examined with reporting contour plots. Variations of Be and Nu were reported by using 3D plots. Growing Ra, power of eddy rises and circular wall temperature decreases about 40%. Besides, Nu augments about 129.8% with growth of Ra while Be declines about 70.8%. As permeability augments, Nu enhances by 11.01% but Be decreases about 8.36%. Existence of Lorentz force make the hybrid nanofluid to move with lower velocity and Nu reduces about 24.5% while Be augments with impose of greater magnetic force.

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“…Shehzad et al (2020) performed the migration of ferrofluid through a wavy tank, utilized a triangular element and enforced the Lorentz force in momentum equations. Normal convective thermal transfer within two cavities of triangular shape under the presence of nanoparticles was analyzed by Dass and Kashyap (2018). As a result, based on Da and buoyancy force, the bottom to top and uniform lineal heating leads to well-organized heating plans.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer management of hybrid nanofluid including radiation and magnetic source terms within a porous domain

et al. 2020

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Natural convected aqueous-based MWCNT + Fe 3 O 4 nanopowder through a permeable cavity employing Lorentz field impacts is illustrated in this work. CVFEM-based technique was developed to simulate the considered physical problem. The source of Darcy in the momentum equation is introduced by the implementation of non-Darcy theory. Further, the radiative heat transportation is analyzed. The thermal contours and flow streamlines elaborate the thermofluid features of nanofluid under variable strength of magnetic field and media permeability conditions. The mutual impact of radiation parameter, Rayleigh number, permeability, and magnetic force on Nu has also been analyzed. The outcomes revealed that the Hartmann number suppresses the natural convection and promotes conduction. Convection is the dominating mode when Ha is zero. As Ha increases from 0 to 60, 66% increment in Ψ can be reported when Ra = 10 5 . With rise of Da from 0.01 to 100, Ψ max augments about 5.88% and 80% when Ha = 60 and 0, respectively. To achieve greater influence, Da, Ha should be reduced. In the highest level of Ra, Da and Ha = 0, Nu for Rd = 0.8 is 2.06 higher than that of Rd = 0. Nu declines about 11.97% with rise of Lorentz force when Da = 0.01. The impact of Da becomes more sensible when Lorentz force has been imposed.

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Two-phase lattice Boltzmann simulation of natural convection in a Cu-water nanofluid-filled porous cavity: Effects of thermal boundary conditions on heat transfer and entropy generation

Cited by 46 publications

References 37 publications

Lattice Boltzmann method to simulate convection heat transfer in a microchannel under heat flux

Lattice Boltzmann method to simulate convection heat transfer in a microchannel under heat flux

Modeling approach for nanomaterial convective migration with inclusion of Lorentz force

Heat transfer management of hybrid nanofluid including radiation and magnetic source terms within a porous domain

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