Numerical study of the natural convection in cavity heated from the lower corner and cooled from the ceiling

Nasr, K. Ben; Chouikh, R.; Kerkeni, C.; Guizani, Amenallah

doi:10.1016/j.applthermaleng.2005.09.011

Cited by 44 publications

(14 citation statements)

References 10 publications

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“…They found that the effect of magnetic field as well as its orientation had adverse impact on the overall heat transfer rate. The consideration of corner heating for closed cavities has been reported in a number of works [10][11][12][13]. Other notable works in MHD convective flow can be found in Hussain et al [14] and Gibanov et al [15].…”

Section: Introductionmentioning

confidence: 97%

MHD convection in a partially driven cavity with corner heating

2019

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The paper presents a pertinent modification to the wall-moving thermal systems (classically represented by lid-driven cavity) by introducing a partial motion of the boundary walls. The effect of partial wall motion is investigated under magnetohydrodynamic (MHD) mixed convection in the cavity filled with porous medium. The corner heating arrangement is chosen for this investigation. The heater is placed at the right-bottom corner of the cavity, whereas the halves of the adjacent sides (which are moving) of the top-left corner are utilized for cooling. The present MHD thermofluid flow in porous cavity under partially driven condition is solved numerically using Brinkman-Forchheimer-Darcy model and analyzed using heatlines, streamlines, isotherms and average Nusselt number. The detailed insights of partially driven cavity are captured for different values of Richardson number (Ri = 0.1-100), Reynolds number (Re = 10-500), Hartmann number (Ha = 0-100), Darcy number (Da = 10 −7 to 10 −3) and porosity (ε = 0.1-1.0). The result reveals that the partial wall motion and its direction have a significant impact on the thermofluid flow structures and heat transfer rate.

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Section: Introductionmentioning

confidence: 97%

MHD convection in a partially driven cavity with corner heating

2019

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“…Recently, Varol et al [10] investigated the flush mounted heater located on the vertical wall of right triangular enclosures. Applications of these boundary conditions can be found in the literature for square or rectangular enclosure (Churchill et al [11], Farouk and Fusegi [12], Turkoglu and Yucel [13], Ben Nasr et al [14], Aydin and Yang [15] and Prasad and Kulacki [16]). …”

Section: Introductionmentioning

confidence: 99%

The effects of Prandtl number on natural convection in triangular enclosures with localized heating from below

Koca

Öztop

Varol

2007

International Communications in Heat and Mass Transfer

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“…The convective transport associated with partial heating of cavity like geometry may frequently be encountered in numerous practical engineering applications. Ben Nasr et al [33] obtained numerical solution of the natural convection heat transfer problem in a cavity heated from lower corner. They deployed control volume method for the numerical simulation and obtained the velocity and temperature fields for different combinations of Rayleigh numbers and geometrical parameters.…”

Section: Introductionmentioning

confidence: 99%

MHD Mixed Convection in a Lid-Driven Cavity Including Heat Conducting Solid Object and Corner Heaters with Joule Heating

Ray¹,

Chatterjee²

2014

Numerical Heat Transfer, Part A: Applications

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The hydromagnetic mixed convection flow and heat transfer in a top sided lid-driven square enclosure is numerically simulated in this paper following a finite volume approach based on the SIMPLEC algorithm. The enclosure is heated by corner heaters which are under isothermal boundary conditions with different lengths in bottom and right vertical walls. The lid is having lower temperature than heaters. The other boundaries of the enclosure are insulated. A uniform magnetic field is applied along the horizontal direction. A heat conducting horizontal solid object (a square cylinder) is placed centrally within the outer enclosure. Shear forces through lid motion, buoyancy forces due to differential heating and magnetic forces within the electrically conducting fluid inside the enclosure act simultaneously. Heat transfer due to forced flow, thermal buoyancy, Joule dissipation and conduction within the solid object are taken into account. Simulations are conducted for various controlling parameters such as the Richardson number (0.1 Ri 10), Hartmann number (0 Ha 50) and Joule heating parameter (0 J 5) keeping the Reynolds number based on lid velocity fixed as Re ¼ 100. The flow and thermal fields are analyzed through streamline and isotherm plots for various Ha, J and Ri. Furthermore, the pertinent transport quantities such as the drag coefficient, Nusselt number and bulk fluid temperature are also plotted to show the effects of Ha, J and Ri on them.

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Numerical study of the natural convection in cavity heated from the lower corner and cooled from the ceiling

Cited by 44 publications

References 10 publications

MHD convection in a partially driven cavity with corner heating

MHD convection in a partially driven cavity with corner heating

The effects of Prandtl number on natural convection in triangular enclosures with localized heating from below

MHD Mixed Convection in a Lid-Driven Cavity Including Heat Conducting Solid Object and Corner Heaters with Joule Heating

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