Finite element simulation of mixed convection heat and mass transfer in a right triangular enclosure

Chee, Ching Yern; Öztop, Hakan F.; Rahman, M. M.; Islam, Md. Mainul; Ahsan, Amimul

doi:10.1016/j.icheatmasstransfer.2012.03.016

Cited by 40 publications

(14 citation statements)

References 22 publications

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“…It is expected that the presence of the nanoparticles in the nanofluids can improve the heat transfer performance of nanofluids . Heat transfer and natural convective flow in the field of nanofluids have many important applications in nature and scientific engineering practices, such as solar collectors, regenerative heat exchangers, cooling of electronic systems, and so on .…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Natural Convection in a Triangle Cavity Filled with Nanofluids Using Tiwari and Das' Model: Effects of Heat Flux

Wang

2016

Heat Trans. Asian Res.

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In this article, we present a fully higher-order compact (FHOC) finite difference method to investigate the effects of heat flux on natural convection of nanofluids in a right-angle triangle cavity, where the left vertical side is heated with constant heat flux both partially and throughout the entire wall, the inclined wall is cooled, and the rest of walls are kept adiabatic. The Darcy flow and the Tiwari and Das' nanofluid models are considered. Investigations with four types of nanofluids were made for different values of Rayleigh numbers with the range of 100 ≤ Ra ≤ 50,000, size of heat flux as 0.1 ≤ ≤ 1.0, enclosure aspect ratio as 0.5 ≤ AR ≤ 2.0, and solid volume fraction parameter of nanofluids with the range of 0% ≤ ≤ 20%. Results show that the average heat transfer rate increases significantly as particle volume fraction and Rayleigh numbers increase, and the maximum value of average Nusselt number is obtained by decreasing the enclosure aspect ratio. The results also show that the average heat transfer decreases with an increase in the length of the heater. Furthermore, multiple correlations in terms of the Rayleigh numbers and the solid volume fraction of four types of nanoparticles have been established in a general form. C⃝ 2016 Wiley Periodicals, Inc. Heat Trans Asian Res, 46 (7): 761-777, 2017; Published online in Wiley Online Library (wileyonlinelibrary.com/journal/htj).

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Natural Convection in a Triangle Cavity Filled with Nanofluids Using Tiwari and Das' Model: Effects of Heat Flux

Wang

2016

Heat Trans. Asian Res.

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“…Comparison of flow and heat transfer characteristics in a liddriven cavity between flexible and modified geometry of a heated bottom wall was investigated by K. Khanafer [14]. Ching et al [15] studied finite element simulation of mixed convection heat and mass transfer in a right triangular enclosure. Finite element simulation of MHD combined convection through a triangular wavy channel was investigated by Parvin and Hossain [16].…”

Section: Introductionmentioning

confidence: 99%

Prandtl Number Effect of Mixed Convection Heat and Mass Transfer in a Triangular Enclosure with Heated Circular Obstacle

Ferdousi¹,

Alim²,

Chowdhury³

2016

IJEPE

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Abstract:The effect of Prandtl number of mixed convection heat and mass transfer in a triangular enclosure with heated and concentrated circular obstacle is analyzed by solving mass, momentum, energy and concentration balance equations. The left lower middle and right upper middle walls are kept at low temperature and concentration. All others wall are assumed to be adiabatic. The lower wall is moving in the +x direction and all others walls are maintained at no-slip condition. Moreover, Galerkin Weighted Residuals finite element method is applied to solve the governing equations. The study is performed for different values of Prandtl number, Richardson number and buoyancy ratio. A simple transformation is employed to transfer the governing equations into a dimensionless form. The result shows that at high Pr heat transfer rate increase rapidly and at low Pr it increases linearly with the increase of Ri. However, buoyancy ratio and Lewis number plays an important role for the flow, temperature and concentration fields.

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“…Mixed convection in different type of enclosures [15][16][17][18][19][20] has received a sustained attention due to its wide range of application in many technological processes such as chemical process, lakes and reservoirs, air conditioning and thermal design of buildings and the cooling of electronic circuit boards etc. The effect of circumferential distribution of the wall heat flux on laminar mixed convection in a horizontal rectangular ducts studied by Chou [21].…”

Section: Introductionmentioning

confidence: 99%

Effect of buoyancy ratio on unsteady thermosolutal combined convection in a lid driven trapezoidal enclosure in the presence of magnetic field

et al. 2015

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Finite element simulation of mixed convection heat and mass transfer in a right triangular enclosure

Cited by 40 publications

References 22 publications

Numerical Simulation of Natural Convection in a Triangle Cavity Filled with Nanofluids Using Tiwari and Das' Model: Effects of Heat Flux

Numerical Simulation of Natural Convection in a Triangle Cavity Filled with Nanofluids Using Tiwari and Das' Model: Effects of Heat Flux

Prandtl Number Effect of Mixed Convection Heat and Mass Transfer in a Triangular Enclosure with Heated Circular Obstacle

Effect of buoyancy ratio on unsteady thermosolutal combined convection in a lid driven trapezoidal enclosure in the presence of magnetic field

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