Natural convection in a square enclosure with a circular cylinder at different horizontal and diagonal locations

Lee, J.M.; Ha, Man Yeong; Yoon, Hyun Sik

doi:10.1016/j.ijheatmasstransfer.2010.07.043

Cited by 160 publications

(49 citation statements)

References 23 publications

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“…The heat transfer enhancement by increasing the cylinder size and/or surface emissivity was obtained by Mezrhab et al [9]. Kim et al [10] and Lee et al [11] showed that the cylinder position could affect heat transfer quantities. The changes in heat transfer quantities at Rayleigh number of 10 7 was presented by Yoon et al [12] and Yu et al [13].…”

Section: Introductionmentioning

confidence: 89%

Natural convection in an enclosure containing a sinusoidally heated cylindrical source

Roslan

Saleh

Hashim

et al. 2014

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 89%

Natural convection in an enclosure containing a sinusoidally heated cylindrical source

Roslan

Saleh

Hashim

et al. 2014

International Journal of Heat and Mass Transfer

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“…Kim et al (2008) investigated the effects of Rayleigh number and vertical position of a hot circular cylinder in a cold square enclosure on the rate of heat transfer. Lee et al (2010) investigated the effects of horizontal position and diameter of a circular cylinder on the rate of heat transfer. Hussain and Hussain (2010) studied the circular cylinder in a square enclosure using limited volume method; they showed that when a constant thermal flux was applied on the cylinder surface, by moving the cylinder towards the bottom wall of the enclosure, the rate of heat transfer was decreased in low Rayleigh numbers, and, inversely, it was increased in high Rayleigh numbers.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Natural Convection From a Pair of Hot Cylinders in a Cold Square Enclosure in Different Boundary Conditions

Rezazadeh¹,

Abdi²

2016

Frontiers in Heat and Mass Transfer

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This study investigates the heat transfer in the mode of natural convection from a pair of hot cylinders to a cold square enclosure. Effects of boundary conditions of the enclosure on the rate of heat transfer from a pair of isothermal hot cylinders are investigated at a Rayleigh number of 10 5 . The cylinders are arranged in a horizontal array at the middle height of enclosure. The commercial software, Fluent (V.6.3.26), is utilized to solve the problem using the Finite Volume Method. The streamlines as well as isothermal lines of the problem are reported. Moreover, the local Nusselt number on the walls of enclosure is calculated. The results show that the boundary conditions of the enclosure have crucial effects on the heat transfer of a pair of hot cylinders.

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“…Problems of convective flow and heat transfer in an enclosure with a coaxial stationary cylinder have been studied extensively (Kuehn and Goldstein, 1976;Kim et al, 2008;Lee et al, 2010;Xu et al, 2010;Yu et al, 2010;Bararnia et al, 2011;Parvin et al, 2012), with some special attention to the analysis of laminar convection inside a triangular closed cavity Yu et al, 2010) since such a geometry often has engineering applications. Xu et al (2010) numerically investigated the laminar steady natural convection in an air-filled triangular cavity with a motionless circular cylinder inside.…”

Section: Introductionmentioning

confidence: 99%

Laminar mixed convection heat transfer of SiC-EG nanofluids in a triangular enclosure with a rotating inner cylinder: simulations based on the measured thermal conductivity and viscosity

Wang

Tian

et al. 2015

J. Zhejiang Univ. Sci. A

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A numerical study has been carried out for a laminar steady mixed convection flow in a 2D triangular enclosure with an inner rotating coaxial cylinder, with the enclosure filled with ethylene glycol-silicon carbide (SiC-EG). The thermal conductivity and viscosity of the SiC-EG nanofluids were experimentally determined by using a Decagon Devices KD2 Pro thermal property meter and a rotational Brookfield viscometer, respectively. Various pertinent parameters, such as the dimensionless rotation velocity, solid volume fraction, dimensionless radius of the inner cylinder, and Rayleigh numbers, were analyzed to determine their influences on heat transfer and fluid flow. Results clearly show how the direction of rotation of the cylinder affects the thermal performance in a triangular enclosure. It is found that the average Nusselt number increases with rise in the Rayleigh number or as more nanoparticles are added to the base liquid. It was also observed that at constant Rayleigh number, different rotational conditions have remarkable effects on the flow and heat transfer characteristics.

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Natural convection in a square enclosure with a circular cylinder at different horizontal and diagonal locations

Cited by 160 publications

References 23 publications

Natural convection in an enclosure containing a sinusoidally heated cylindrical source

Natural convection in an enclosure containing a sinusoidally heated cylindrical source

Numerical Simulation of Natural Convection From a Pair of Hot Cylinders in a Cold Square Enclosure in Different Boundary Conditions

Laminar mixed convection heat transfer of SiC-EG nanofluids in a triangular enclosure with a rotating inner cylinder: simulations based on the measured thermal conductivity and viscosity

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