Numerical simulation of magnetohydrodynamic buoyancy-induced flow in a non-isothermally heated square enclosure

Öztop, Hakan F.; Oztop, Mesut; Varol, Yasin

doi:10.1016/j.cnsns.2007.11.005

Cited by 76 publications

(26 citation statements)

References 17 publications

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“…Oztop et al [9] numerically investigated magnetic field effects on natural convection in an enclosure with non-isothermal heater. Rahman et al [10] analyzed magnetic field effect on mixed convection in a lid driven cavity and found average Nusselt number decreases with increasing Hartmann number and joule heating parameter.…”

Section: Introductionmentioning

confidence: 99%

Magnetohydrodynamic natural convection in trapezoidal cavities

Hasanuzzaman

Öztop

Rahman

et al. 2012

International Communications in Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Magnetohydrodynamic natural convection in trapezoidal cavities

Hasanuzzaman

Öztop

Rahman

et al. 2012

International Communications in Heat and Mass Transfer

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“…Kahveci and Oztuna [20] reported the effect of magnetic force on natural convection in a laterally heated partitioned enclosure. Oztop et al [21] numerically simulated the MHD buoyancy driven flow in a non-isothermally heated square enclosure. They observed that the heat transfer decreases with increasing magnetic field strength and decreasing value of amplitude of sinusoidal boundary temperature.…”

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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“…It is an important heat and fluid flow for metallurgical science as given by Ozoe (2001aOzoe ( , 2001b. In this context, Oztop et al (2009) The main aim of the present study is to investigate the effect of magnetic field inside a long channel having a semi-circular cavity. These types of geometries were introduced in the literature for different applications for cavities and electronic devices by Kimura et al (1997), Oztop (2005), Chandra, and Chhabra (2011)..…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of magneto-hydrodynamics mixed convection in an open channel having a semi-circular heater

Billah

Munshi

Azad

et al. 2012

J. nav. arch. mar. engg.

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The present study is conducted to investigate heat and fluid flow in an open channel having a circular heater on the bottom surface under magnetic field. The bottom surface is heated isothermally, but the other walls of the channel are kept adiabatic. The consequent mathematical model is governed by the coupled equations of mass, momentum and energy and solved by employing Galerkin weighted residual method of finite-element technique. A wide range of pertinent parameters such as Rayleigh numbers (10 3 ≤ Ra ≤10 5 ) and Hartmann numbers (10 ≤ Ha≤ 100) are considered in the present study. In addition, the mixed convection regime is occurred due to buoyancy and shear forces. Various characteristics such as streamlines, isotherms and heat transfer rate in terms of the average Nusselt number (Nu av ), average fluid temperature (θ av ), and Drag force (D) is investigated for the aforesaid parameters. The magnetic field is found as a control parameter on heat and fluid flow, particularly at higher Rayleigh numbers. It is observed that Hartmann numbers have a significant effect on average Nusselt number, average fluid temperature and Drag force.

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Numerical simulation of magnetohydrodynamic buoyancy-induced flow in a non-isothermally heated square enclosure

Cited by 76 publications

References 17 publications

Magnetohydrodynamic natural convection in trapezoidal cavities

Magnetohydrodynamic natural convection in trapezoidal cavities

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

Numerical simulation of magneto-hydrodynamics mixed convection in an open channel having a semi-circular heater

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