Numerical study of mixed convection flows in a square lid-driven cavity utilizing nanofluid

Talebi, Farhad; Mahmoudi, Amir Houshang; Shahi, Mina

doi:10.1016/j.icheatmasstransfer.2009.08.013

Cited by 284 publications

(132 citation statements)

References 23 publications

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“…To study the mesh al. [14] at Re=100, Ra=1.47×10 independency, the average Nusselt number on the hot obstacle was chose for case with Ri=0.1 and S =0.75 * ( Table 2). The mesh resolution of 200×200 was selected for all cases in accordance with the obtained results.…”

Section: Computational Domainmentioning

confidence: 99%

“…Darzi et al [9] have heat transfer, but they didn't report the details of heat 6 investigated the effect of the fins on mixed convection in transfer enhancement. Talebi et al [14] have lid driven cavity for various Richardson number and demonstrated a numerical study of laminar mixed different height and number of fins. They found that heat convection through copper-water nanofluid in square transfer enhancement occurs in low fin height and high cavity for different Reynolds and Rayleigh numbers.…”

Section: Introductionmentioning

confidence: 99%

“…It was applications because of remarkable increase in effective used for simulation of the flow field and thermal have reported on enhanced thermal conductivity of and Eq. (4) for flow and temperature fields, respectively In the present study LBM approach is used to [14]. simulate mixed convection flow utilizing nanofluids in a square lid-driven cavity with presence of cubic obstacle.…”

Section: Introductionmentioning

confidence: 99%

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Mix Convection Heat Transfer in a Lid Driven Enclosure Filled by Nanofluid

Afrouzi¹,

Farhadi²

2013

IJEE

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Abstract:In the present study, mixed convection flow was investigated by Lattice Boltzmann method in a square lid-driven cavity utilizing nanofluid in presence of cubic obstacle. The fluid in the cavity was a water-based nanofluid containing Cu nanoparticles. The study was carried out for a constant Rayleigh number 10 , the Richardson number ranging from 0.1 to 10 and the solid volume fraction ranging from 0 to 0.03. 4The effects of solid concentrations on hydrodynamic and thermal characteristics were investigated. The results were presented in the form of streamlines and temperature contours for different values of solid volume fractions and Richardson numbers. The results indicated that the averaged Nusselt number increases byaugmentation of solid volume fraction. The Richardson number had more effect on Nusselt number when obstacle was located at the bottom section of enclosure.

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Section: Computational Domainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mix Convection Heat Transfer in a Lid Driven Enclosure Filled by Nanofluid

Afrouzi¹,

Farhadi²

2013

IJEE

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“…Talebi et al [12] numerically studied mixed convection flows in a square lid-driven cavity utilizing nanofluid. Their results showed that at a given Reynolds and Rayleigh numbers, solid concentration has a positive effect on the heat transfer enhancement.…”

Section: Islamicmentioning

confidence: 99%

Periodic mixed convection of a nanofluid in a cavity with top lid sinusoidal motion

Karimipour

Nezhad

Behzadmehr

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part C:

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Abstract-The periodic mixed convection of a water-copper nanofluid inside a rectangular cavity with aspect ratio of 3 is investigated numerically. The temperature of the bottom wall of the cavity is assumed greater than the temperature of the top lid which oscillates horizontally with the velocity defined as u = u 0 sin (ω t). The effects of Richardson number, Ri, and volume fraction of nanoparticles on the flow and thermal behavior of the nanofluid are investigated. Velocity and temperature profiles, streamlines and isotherms are presented. It is observed that when Ri < 1, heat transfer rate is much greater than when Ri > 1. The higher value of Ri corresponds to a lower value of the amplitude of the oscillation of Nu m in the steady periodic state. Moreover, increasing the volume fraction of the nanoparticles increases the heat transfer rate.

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“…Employing the proposed correlations by the mentioned authors, some researchers have studied the mixed convection uid ow and heat transfer of nano uids with variable thermal conductivity and viscosity within the enclosures. For example, Talebi et al [32] conducted a numerical study to investigate mixed convection ow and heat transfer of copper-water nano uid in a square lid-driven enclosure. They used the Patel et al model [20] and Brinkman model [14] to calculate the e ective thermal conductivity and viscosity of nano uid, respectively.…”

Section: Introductionmentioning

confidence: 99%

Effects of uncertainties of conductivity models on mixed convection for Al2O3-water nano fluid

Abbasian

Yazdeli

2016

Scientia Iranica

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Abstract. The present numerical study aims to investigate the e ects of uncertainties of di erent conductivity models on mixed convection uid ow and heat transfer in a square cavity lled with Al2O3-water nano uid. The left and right vertical sides of enclosure are maintained at high and low constant temperatures, respectively, while the bottom and top horizontal sides of the enclosure are kept insulated. Furthermore, the right wall moves from down to up with a constant velocity, Vp. To approximate the nano uid e ective thermal conductivity, ve most commonly used models, namely, Maxwell, Khanafer and Vafai, Corcione, Chon et al., and Patel et al., are employed. Finite volume method and SIMPLER algorithm are used in order to discretize the governing equations. Simulations are performed for nanoparticles volume fraction ranging from 0 to 0.05 and Richardson number ranging between 0.01 and 100. The results indicate that there are signi cant di erences between the average Nusselt numbers predicted by the ve employed conductivity models.

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Numerical study of mixed convection flows in a square lid-driven cavity utilizing nanofluid

Cited by 284 publications

References 23 publications

Mix Convection Heat Transfer in a Lid Driven Enclosure Filled by Nanofluid

Mix Convection Heat Transfer in a Lid Driven Enclosure Filled by Nanofluid

Periodic mixed convection of a nanofluid in a cavity with top lid sinusoidal motion

Effects of uncertainties of conductivity models on mixed convection for Al2O3-water nano fluid

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