Mixed Magneto Convection in a Lid Driven Square Enclosure with a Sinusoidal Vertical Wall and Joule Heating

Alam, M. S.; Алим, М. А.; Mollah, Md. Shirazul Hoque

doi:10.1016/j.proeng.2017.08.172

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…Alam et al 16 evaluated mixed convective flow in a cavity that was exposed to Joule heating. The study shows that as the Ra increases, the local heat transfer coefficient amplifies.…”

Section: Introductionmentioning

confidence: 99%

Magnetoconvection around an elliptic cylinder placed in a lid‐driven square enclosure subjected to internal heat generation or absorption

Olayemi

Al‐Farhany

Obalalu³

et al. 2022

Heat Trans

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The impacts of MHD and heat generation/absorption on lid‐driven convective fluid flow occasioned by a lid‐driven square enclosure housing an elliptic cylinder have been investigated numerically. The elliptic cylinder and the horizontal enclosure boundaries were insulated and the left vertical lid‐driven wall was experienced at a fixed hot temperature, and the right wall was exposed to a fixed cold temperature. COMSOL Multiphysics 5.6 software was used to resolve the nondimensional equations governing flow physics. A set of parameters, such as Hartmann number (0 ≤ italicHa ≤ 50 $0\le {Ha}\le 50$), Reynolds number (1 0 2 ≤ italicRe ≤ 1 0 3 $1{0}^{2}\le {Re}\le 1{0}^{3}$), Grashof number (1 0 2 ≤ italicGr ≤ 1 0 5 $1{0}^{2}\le {Gr}\le 1{0}^{5}$), heat generation‐absorption parameter (− 3 ≤ J ≤ 3 $-3\le J\le 3$), and elliptical cylinder aspect ratio (AR) (1.0 ≤ italicAR ≤ 3.0 $1.0\le {AR}\le 3.0$) have been investigated. The current study discovered that for low Reynolds number, the adiabatic cylinder AR of 2.0 provided the optimum heat transfer enhancement for the model investigated, also the impact of cylinder size diminishes beyond Gr = 104. But for high Reynolds (Re = 1000), the size of the cylinder with AR = 3.0 offered the highest heat transfer augmentation. The clockwise flow circulation reduces because of an increase in AR, which hinders the flow circulation. In addition, heat absorption supports heat transfer augmentation while heat generation can suppress heat transfer improvement.

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“…Alam et al 16 evaluated mixed convective flow in a cavity that was exposed to Joule heating. The study shows that as the Ra increases, the local heat transfer coefficient amplifies.…”

Section: Introductionmentioning

confidence: 99%

Magnetoconvection around an elliptic cylinder placed in a lid‐driven square enclosure subjected to internal heat generation or absorption

Olayemi

Al‐Farhany

Obalalu³

et al. 2022

Heat Trans

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show abstract

“…They concluded that the Prandtl number thermal diffusivity dominates, this means that conduction dominates over convection. Alam et al [15] performed mixed magneto convection in a lid driven square enclosure with a sinusoidal vertical wall and joule heating. Halim Bhuiyanet.…”

Section: Introductionmentioning

confidence: 99%

Magneto Hydrodynamics Free Convection in a Rectangular Enclosure with Three Square Heated Block

Haque¹,

Alim²,

Alam³

et al. 2019

IJTAM

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In the present study the effect of natural convection in a rectangular cavity with three square shape heated block is focused in this numerical is studied. The horizontal bottom wall and three square blocks are temperature T h while the left and right vertical walls and horizontal top wall are temperature T c with T h >T c. The governing equations along with appropriate boundary conditions for the present problem are first transformed into a non-dimensional form and the resulting non linear system of partial differential equations are then solved numerically using Galerkin's finite element method. Parametric studies of the fluid flow and heat transfer in the enclosure are performed for magnetic parameter Hartmann number Ha, Prandtl number Pr and Rayleigh number Ra. The streamlines, isotherms and average Nusselt number at the hot wall and average temperature of the fluid in the enclosure are presented for the parameters. The numerical results indicate that the Hartmann number and Rayleigh number have strong influence on the streamlines and isotherms. On the other hand Prandtl has little effect on the stream line and isotherm plots. Finally, the mentioned parameters have significant effect on average Nusselt number at the hot wall and average temperature of the fluid in the cavity.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Natural Convection in a Rectangular Cavity with Heated Triangle and Internal Heat Generation

Mollah¹,

Alam²,

Alim³

2019

IJTAM

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Free convection flow and heat transfer in a rectangular cavity with heated triangle and internal heat generation is investigated numerically. A finite element analysis is performed to investigate the effects of uniform heating and is also used for solving the Navier-Stokes and Energy balance equations. The horizontal bottom wall is divided into three equal sections. The middle section of the horizontal bottom wall, bottom side of the triangle and left vertical left wall in the enclosure were kept temperature at T h . The other two parts of the horizontal bottom wall and the other two sides of the triangle were kept thermal insulation while the right vertical walls and the top wall of the cavity were maintained constant temperature T c with T h >T c . The physical problems are represented mathematically by different sets of governing equations along with corresponding boundary conditions. The dimensionless Parameters in the equations are performed for Heat generation (λ), Rayleigh number (Ra) and Prandtl number (Pr). The streamlines, isotherms, average Nusselt number, velocity profiles and temperature distribution of the fluid in the enclosure are presented graphically. The numerical results indicate that the Heat Generation and Rayleigh number have strong influence on the streamlines and isotherms. Also the mentioned parameters have significant effect on average Nusselt number at the hot wall and average temperature of the fluid in the enclosure.

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Mixed Magneto Convection in a Lid Driven Square Enclosure with a Sinusoidal Vertical Wall and Joule Heating

Cited by 8 publications

References 7 publications

Magnetoconvection around an elliptic cylinder placed in a lid‐driven square enclosure subjected to internal heat generation or absorption

Magnetoconvection around an elliptic cylinder placed in a lid‐driven square enclosure subjected to internal heat generation or absorption

Magneto Hydrodynamics Free Convection in a Rectangular Enclosure with Three Square Heated Block

Numerical Simulation of Natural Convection in a Rectangular Cavity with Heated Triangle and Internal Heat Generation

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