Effect of sinusoidal wavy bottom surface on mixed convection heat transfer in a lid-driven cavity

Al-Amiri, Abdalla M.; Khanafer, Khalil; Bull, Joseph L.; Pop, Ioan

doi:10.1016/j.ijheatmasstransfer.2006.10.008

Cited by 145 publications

(67 citation statements)

References 29 publications

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“…The qualitative results are shown in terms of contours of streamlines and isotherms while the local and average Nusselt number are shown quantitatively. This section illustrates the effect of location of the moving wall of the cavity at aspect ratio 1/2, Gr =10 5 and Ri = 0.25. The analysis is made for three different casesas shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

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Numerical investigation of mixed convection in a lid-driven triangular cavity with a circular cylinder using ANN modeling

Nahak¹,

Triveni²,

Panua³

2017

IJHT

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The study of laminar mixed convection is conducted in an air filled the lid-driven triangular cavity with a static circular cylinder. The circular cylinder is fixed at the center of the triangular cavity whose diameter is varied with respect to the height of the cavity and the variation is shown in terms of aspect ratio (AR = D/H). Sides of the cavity and the cylinder are maintained at uniform temperature whereas the cylinder temperature is considered higher than the walls of the cavity. Finite volume method is adopted to solve the governing equations. The present problem is investigated for different constraint parameters such as moving walls, different geometries of the hot wall, different aspect ratio, Richardson number (Ri) and Grashof number (Gr). The outcomes of the investigation reported that the average Nusselt number is found significant at AR = 1/2, Ri = 0.1 and Gr = 105. An Artificial Neural Network (ANN) tool is employed in the study to validate the obtained numerical results of stream functions and Nusselt number.

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Section: Resultsmentioning

confidence: 99%

“…[1][2][3][4][5][6]. The lid-driven cavity is a benchmark problem for the high heat transfer through the conjoint performances of free and forced convection heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of mixed convection in a lid-driven triangular cavity with a circular cylinder using ANN modeling

Nahak¹,

Triveni²,

Panua³

2017

IJHT

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“…Wang and Chen [8] analyzed forced convection in a wavy-wall channel and demonstrated the effects of wavy geometry, Reynolds number and Prandtl number on the skin friction and Nusselt number. Al-Amiri et al [9] investigated mixed convection heat transfer in lid-driven cavity with a sinusoidal wavy bottom surface. Zeghbid and Bessaih [10] studied numerically the mixed convection in lid-driven cavities filled with a nanofluid.…”

Section: Introductionmentioning

confidence: 99%

Mixed convection in complicated cavity with non-uniform heating on both sidewalls

Mekroussi¹,

Kherris²,

Mebarki³

et al. 2017

IJHT

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This paper deals with a numerical study of mixed convection flow and heat transfer inside lid-driven cavity. The main purpose in this present study is to maximize the heat transfer. For that, a new lid-driven cavity with two wavy walls and non-uniform heating on both sidewalls has been proposed. The two horizontal walls are considered isolated, while two variable sinusoidal temperature distributions are imposed to the left and right vertical side walls with different amplitudes and phases. A finite volume method is used to solve numerically the non-dimensional governing equations. The tests were carried out for Richardson numbers which vary from 0.01 to 100, amplitude ratios from 0 to 1, and phase deviations from 0 to , meanwhile the Prandtl number is fixed to Pr = 0.71. The distributions of streamlines, isotherms, and the variations of local and average Nusselt numbers with the variation of Richardson numbers, amplitude ratios and phase deviations are presented and compared with results given in the literature. The comparisons have showed a satisfactory agreement. Furthermore, the present study showed that the wavy walls with variable temperature have strong influence on enhancing heat transfer.

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“…They found that direction of lid is more effective on heat transfer and fluid flow in the case of mixed convection than it is the case in forced convection. Al-Amiri et al [19] studied effect of sinusoidal wavy bottom surface on mixed convection heat transfer in a lid-driven cavity. Recently, Chowdhury et al [20] has analyzed natural convection in a porous triangular enclosure with a circular obstacle in presence of heat generation.…”

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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Effect of sinusoidal wavy bottom surface on mixed convection heat transfer in a lid-driven cavity

Cited by 145 publications

References 29 publications

Numerical investigation of mixed convection in a lid-driven triangular cavity with a circular cylinder using ANN modeling

Numerical investigation of mixed convection in a lid-driven triangular cavity with a circular cylinder using ANN modeling

Mixed convection in complicated cavity with non-uniform heating on both sidewalls

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

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