Free convection and radiation characteristics for a vertical plate embedded in a porous medium

Badruddin, Irfan Anjum; Zainal, Zulkarnain; Narayana, Ponnada A.; Seetharamu, K. N.; Siew, Lam Weng

doi:10.1002/nme.1541

Cited by 91 publications

(5 citation statements)

References 17 publications

(31 reference statements)

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“…T 4 is expandable as per Taylor series about cold temperature of outer boundary, T 0 and neglecting higher order terms (Raptis, 1998; Azeem et al , 2016; Badruddin et al , 2006b, 2007b): …”

Section: Discussionmentioning

confidence: 99%

Investigation of heat transfer in irregular porous cavity subjected to various boundary conditions

Badruddin

2019

HFF

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Purpose The purpose of this paper is to investigate the heat transfer in an arbitrary cavity filled with porous medium. The geometry of the cavity is such that an isothermal heating source is placed centrally at the bottom of the cavity. The height and width of the heating source is varied to analyses its effect on the heat transfer characteristics. The investigation is carried out for three different cases of outer boundary conditions such as two outside vertical walls being maintained at cold temperature To, two vertical and top horizontal surface being heated to. To and the third case with top surface kept at To but other surfaces being adiabatic. Design/methodology/approach Finite element method is used to solve the governing equations. Findings It is observed that the cavity exhibits unique heat transfer behavior as compared to regular cavity. The cases of boundary conditions are found to affect the heat transfer rate in the porous cavity. Originality/value This is original work representing the heat transfer in irregular porous cavity with various boundary conditions. This work is neither being published nor under review in any other journal.

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“…T 4 is expandable as per Taylor series about cold temperature of outer boundary, T 0 and neglecting higher order terms (Raptis, 1998; Azeem et al , 2016; Badruddin et al , 2006b, 2007b): …”

Section: Discussionmentioning

confidence: 99%

Investigation of heat transfer in irregular porous cavity subjected to various boundary conditions

Badruddin

2019

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“…where u o is the constant suction velocity normal to the plate. Using the Rosseland hypothesis [36,37] as:…”

Section: Continuity Equationmentioning

confidence: 99%

Heat Transfer and Entropy in a Vertical Porous Plate Subjected to Suction Velocity and MHD

Ahammad

Badruddin

Kamangar

et al. 2021

Entropy

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This article presents an investigation of heat transfer in a porous medium adjacent to a vertical plate. The porous medium is subjected to a magnetohydrodynamic effect and suction velocity. The governing equations are nondepersonalized and converted into ordinary differential equations. The resulting equations are solved with the help of the finite difference method. The impact of various parameters, such as the Prandtl number, Grashof number, permeability parameter, radiation parameter, Eckert number, viscous dissipation parameter, and magnetic parameter, on fluid flow characteristics inside the porous medium is discussed. Entropy generation in the medium is analyzed with respect to various parameters, including the Brinkman number and Reynolds number. It is noted that the velocity profile decreases in magnitude with respect to the Prandtl number, but increases with the radiation parameter. The Eckert number has a marginal effect on the velocity profile. An increased radiation effect leads to a reduced thermal gradient at the hot surface.

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“…In recent years, the thermal non‐equilibrium model has received more and more attention and it has been used in the study of different convection heat transfer problems in porous media 1–3, 11–19, in which the effects of thermal non‐equilibrium on the fluid flow through a porous packed bed were analyzed in detail. Al‐Amiri 1 conducted a numerical simulation using the two‐energy equation model to study natural convection in a differentially heated square cavity filled with porous media.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Natural Convection in a Porous Cavity with Sinusoidal Thermal Boundary Condition

Wang

Zhou

2016

Chem Eng & Technol

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The steady natural convection in a rectangular cavity filled with a heat-generating porous medium was numerically investigated using a thermal non-equilibrium model for the heat transfer between the fluid and solid phases. All of the walls of the enclosure are adiabatic, except for the left wall, which is partially heated and cooled by a spatial sinusoidal temperature profile. The results show that the temperature fields near the left wall and the local Nusselt number of the left wall vary periodically because of the sinusoidal boundary condition. There exists an optimal fluctuant parameter of N (N = 3) to maximize the heat transfer rate of the fluid phase in the square enclosure. The periodicity parameter N has a significant influence on the value of the average Nusselt number of the fluid phase when the Darcy and Rayleigh numbers increase.

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Free convection and radiation characteristics for a vertical plate embedded in a porous medium

Cited by 91 publications

References 17 publications

Investigation of heat transfer in irregular porous cavity subjected to various boundary conditions

Investigation of heat transfer in irregular porous cavity subjected to various boundary conditions

Heat Transfer and Entropy in a Vertical Porous Plate Subjected to Suction Velocity and MHD

Numerical Study of Natural Convection in a Porous Cavity with Sinusoidal Thermal Boundary Condition

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