Numerical solution of nanofluid mixed convection heat transfer in a lid-driven square cavity with a triangular heat source

Kalteh, Mohammad; Javaherdeh, Kourosh; Azarbarzin, Toraj

doi:10.1016/j.powtec.2013.12.039

Cited by 61 publications

(28 citation statements)

References 27 publications

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“…OvandoChacon et al [17] published his numerical study on the effect of heater length on the heating of a solid circular obstruction centered in an open cavity in which he observed four types of vortex formations and the increase in obstruction temperature with low Prandtl number with large heater sizes. Khanafer and Aithal [18] studied laminar mixed convection flow and heat transfer characteristics in a grid based on Galerkin method and have obtained optimal heat transfer [20] published a numerical solution of nanofluid mixed convection heat transfer in a lid-driven square cavity with a triangular heat source in which he discussed the effects of the volume fraction, nanoparticle diameter and nanoparticle types on the flow and Nusselt number. He also found that suspending the nanoparticles in pure fluid leads to a significant heat transfer increase.…”

Section: Literature Reviewmentioning

confidence: 99%

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Numerical Investigation of Mixed Convection Heat Transfer from Block Mounted on a Cavity

et al. 2014

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This work aims to numerically investigate the mixed convective flow over a three-dimensional cavity that lies under the horizontal channel with a vertical heat source projecting from the bottom of the cavity. This investigation is progressed by establishing the boundary conditions of the walls of vertical heat source as isothermal, while backward and the forward facing steps as isothermal at ambient temperatures and the rest of the walls are adiabatic. The flow is laminar and incompressible in the cubic geometry. A numerical simulation is undertaken to investigate the flow structure, heat transfer characteristics and the complex interaction between the induced stream flow at ambient temperature and buoyancy-induced flow from the walls of the heated source. The numerical simulations are performed using commercial CFD codes. The numerical codes are validated with previously published benchmark results. The study is performed for three different Reynolds numbers (100, 500 and 1,000) and subsequently for three different Richardson numbers (0.1, 1 and 10) for each Reynolds number. The height of the vertical heat source is kept constant for all the abovementioned cases. A special case is undertaken to study the

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Section: Literature Reviewmentioning

confidence: 99%

“…15,16,17,18,19,20,21,22 and 23. Figure 24 shows temperature contours as well as streamline contours for aspect ratio equals to 2.…”

Section: Temperature Profile and Heat Transfermentioning

confidence: 99%

Numerical Investigation of Mixed Convection Heat Transfer from Block Mounted on a Cavity

et al. 2014

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“…They reported that the convective Nusselt number decreases as the radiation effect increases. Kalteh et al, (2014) presented laminar mixed convection of nanofluid in a lid-driven square enclosure with a triangular heated block. They showed that increasing the nanoparticles diameter, the volume fraction and Reynolds leads to an increase in mean Nusselt number.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer and Cu-Water Nanofluid Flow in a Ventilated Cavity Having Central Cooling Cylinder and Heated From the Below Considering Three Different Outlet Port Locations

Boulahia¹,

Wakif²,

Sehaqui³

2018

Frontiers in Heat and Mass Transfer

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A numerical study has been performed to investigate mixed convection flow in a vented square cavity with circular cooling obstacle. The governing equations such as two dimensional Navier-Stokes, continuity, and energy balance equations have been solved using a finite volume discretization method with SIMPLE algorithm. The effect of the Richardson number, outlet port location and volume fraction of nanoparticles were studied. The outlet port is varied from top to bottom in order to find the maximum heat transfer rate. The results indicated that by increasing the volume fraction of nanoparticles and reducing Richardson number, the heat transfer rate is enhanced. Moreover, it is found that the best configuration of the system for better heat transfer is obtained when placing the outlet port on the bottom location of the vented cavity.

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“…Their results suggest that when the vertical walls move upwards in the same direction, the heat transfer decreases significantly compared to when the vertical walls move in opposite directions. Kalteh et al [1] considered laminar mixed convection of nanofluid in a lid-driven square cavity with a triangular heat source. Their simulations indicate that increasing the volume fraction, the nanoparticles diameter and Reynolds leads to an increase in average Nusselt number.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Mixed Convection Heat Transfer of Nanofluid in a Lid Driven Square Cavity with Three Triangular Heating Blocks

Boulahia¹,

Wakif²,

Sehaqui³

2016

IJCA

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The present investigation addressed mixed convection heat transfer of nanofluid in a lid driven square cavity with three triangular heating blocks. Finite volume discretization method with SIMPLE algorithm is employed for solving the twodimensional Navier-Stokes and energy balance equations. The method used is validated against previous works. Two cases were considered depending on the position of three triangular heating blocks. Effects of pertinent parameters such as; position of triangular heating blocks, the Richardson number (0.1 ≤ ܴ݅ ≤ 100), the Prandtl number of the pure water ‫ݎܲ(‬ = 6.2) and the volume fraction of nanoparticles (0 ≤ ߮ ≤ 0.05) on the flow and Nusselt number are investigated. The results of this study illustrate that, by reducing Richardson number and increasing the volume fraction of nanoparticles, the average Nusselt number increases. It is also found that there is an optimal position of triangular heating blocks where the heat transfer rate is maximized.

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Numerical solution of nanofluid mixed convection heat transfer in a lid-driven square cavity with a triangular heat source

Cited by 61 publications

References 27 publications

Numerical Investigation of Mixed Convection Heat Transfer from Block Mounted on a Cavity

Numerical Investigation of Mixed Convection Heat Transfer from Block Mounted on a Cavity

Heat Transfer and Cu-Water Nanofluid Flow in a Ventilated Cavity Having Central Cooling Cylinder and Heated From the Below Considering Three Different Outlet Port Locations

Numerical Investigation of Mixed Convection Heat Transfer of Nanofluid in a Lid Driven Square Cavity with Three Triangular Heating Blocks

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