Effect of Inclination on Heat Transfer and Fluid Flow in a Finned Enclosure Filled with a Dielectric Liquid

Cheikh, Nader Ben; Chamkha, Ali J.; Ben-Beya, Brahim

doi:10.1080/10407780903163389

Cited by 15 publications

(4 citation statements)

References 21 publications

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“…The results obtained in this research could be confirmed by the recent studies on free and forced convection of nanofluids in cavities and channels (Takhar et al , 2003; Ben-Nakhi and Chamkha, 2006; Chamkha et al , 2015; Ben-Nakhi and Chamkha, 2007a; Ben-Nakhi and Chamkha, 2007b; Cheikh et al , 2009; Chamkha et al , 2010; Afrand et al , 2014a; Afrand, 2017; Afrand et al , 2014b; Afrand et al , 2015a; Afrand et al , 2015b).…”

Section: Discussionsupporting

confidence: 87%

Effect of replacing nanofluid instead of water on heat transfer in a channel with extended surfaces under a magnetic field

Aghakhani

Ghasemi

Pordanjani

et al. 2019

HFF

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Purpose The purpose of this study is to conduct a numerical analysis of flow and heat transfer of water–aluminum oxide nanofluid in a channel with extended surfaces in the presence of a constant magnetic field. The channel consists of two parallel plates and five obstacles of constant temperature on the lower wall of the channel. The upper wall and the inlet and outlet lengths of the lower wall are insulated. A uniform magnetic field of the magnitude B0 is located beneath the obstacles. The nanofluid enters the channel with a uniform velocity and temperature, and a fully developed flow leaves the channel. Design/methodology/approach The control volume-based finite difference and the SIMPLE algorithm were used for numerical solution. In addition to examining the effect of the Reynolds number, the effects of Hartman number, the volume fraction of nanoparticles, the height of obstacles, the length of obstacles and the distance between the obstacles were investigated. Findings According to the results, the heat transfer rate increases with an increasing Reynolds number. As the Hartmann number increases, the heat transfer rate increases. The heat transfer rate also increases with an increase in the volume fraction of nanoparticles. The mean Nusselt number is reduced by an increasing height of obstacles. An increase in the distance between the obstacles in the presence of a magnetic field does not have a significant impact on the heat transfer rate. However, the heat transfer rate increases in the absence of a magnetic field, as the distance between the obstacles increases. Originality/value This paper is original and unpublished and is not being considered for publication elsewhere.

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Section: Discussionsupporting

confidence: 87%

Effect of replacing nanofluid instead of water on heat transfer in a channel with extended surfaces under a magnetic field

Aghakhani

Ghasemi

Pordanjani

et al. 2019

HFF

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“…Their results indicated the reduction of heat transfer caused by the magnetic field. Additionally, the flow inside cavities could be controlled by inserting dividers [14][15].…”

Section: Takedownmentioning

confidence: 99%

“…The gird used is non-uniform structural quadrilateral grid. This test is performed for the case Ra=10 8 , Ha=0, hnp=0 and E =10 14 . The results of the examination are presented in Fig.…”

Section: Solution Procedure Grid Evaluation and Verificationmentioning

confidence: 99%

MHD natural convection of Cu–Al2O3 water hybrid nanofluids in a cavity equally divided into two parts by a vertical flexible partition membrane

Ghalambaz

Mehryan

Izadpanahi

et al. 2019

J Therm Anal Calorim

132

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“…They showed the effect of heat-generating body on the fluid flow and heat transfer in the cavity. Natural convective flow of a dielectric fluid in an inclined cavity with thin fin placed on the hot wall is investigated numerically by Cheikh et al (2009). They found that the average Nusselt number is significantly affected by the inclination angle of the cavity regardless of the fin.…”

Section: Introductionmentioning

confidence: 99%

Effect of mutually orthogonal heated plates on buoyancy convection flow of micropolar fluid in a cavity

Muthtamilselvan

Periyadurai

Doh

2018

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Purpose The main purpose of this study is to investigate the natural convection of micropolar fluid in a square cavity with two orthogonal heaters placed inside. The study of natural convection in a two-dimensional enclosure determines the effect of non-uniform heated plate on certain micropolar fluid flows which are found in many engineering applications. Therefore, because of its practical interest in the engineering fields such as building design, cooling of electronic components, melting and solidification process, solar energy systems, solar collectors, liquid crystals, animal blood, colloidal fluids and polymeric fluids, the topic needs to be further explored. Design/methodology/approach The dimensionless governing equations have been solved by finite volume method of the second-order central difference and upwind scheme. Findings The effects of the Rayleigh number, nonuniformity parameter and vortex viscosity parameter on fluid flow and heat transfer have been analyzed. The rate of heat transfer increases with an increase in the aspect ratio of the heated plates for all the values of Rayleigh number and vortex viscosity parameter. The heat transfer rate is reduced with an increase in the vortex viscosity parameter. It is predicted that the non-uniform of the baffle gives better heat transfer than uniform heating. Originality/value The present numerical results were tested against the experimental work. The present results have an excellent agreement with the results obtained by the previous experimental work.

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Effect of Inclination on Heat Transfer and Fluid Flow in a Finned Enclosure Filled with a Dielectric Liquid

Cited by 15 publications

References 21 publications

Effect of replacing nanofluid instead of water on heat transfer in a channel with extended surfaces under a magnetic field

Effect of replacing nanofluid instead of water on heat transfer in a channel with extended surfaces under a magnetic field

MHD natural convection of Cu–Al2O3 water hybrid nanofluids in a cavity equally divided into two parts by a vertical flexible partition membrane

Effect of mutually orthogonal heated plates on buoyancy convection flow of micropolar fluid in a cavity

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