Exponential nonuniform wall heating of a square cavity and natural convection

Türkyılmazoğlu, Mustafa

doi:10.1016/j.cjph.2021.12.021

Cited by 35 publications

(4 citation statements)

References 49 publications

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“…Hattab et al [31] studied turbulent natural convection in a square cavity and found that the heat transport was increased with the increase of the volume percentage. Turkyilmazoglu [32] studied nonuniform heating in free convection and found the best heat deletion rate close to the top wall of a cavity. Bilal et al [33] studied the power law fluid in a square cavity and found that heat conduction rises as the Rayleigh number increases, driven by the generation of temperature variations within the fluid domain.…”

Section: Introductionmentioning

confidence: 99%

Free convection at different locations of adiabatic elliptic blockage in a square enclosure

Billah,

Hossain,

Asad

et al. 2024

Mathematical Modelling and Numerical Simulation With Applications

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The numerical simulation of free convection flow within a square-shaped enclosure for various orientations of elliptic blockage (EB) is performed in the present study. The bottom wall of the cavity remains uniformly heated, where the left and right (side) walls as well as the boundary wall of the elliptic blockage are insulated and the top wall remains at a cool temperature. As $Pr$ remains constant, the effects of different values of $Ra$ have a great influence on overall fluid flow and temperature gradient for three different locations: bottom elliptic blockage (BEB), center elliptic blockage (CEB) and top elliptic blockage (TEB), as a mass flow circulation has been identified, and a state of equilibrium has been established within the fluid flow simulations along with the isotherm contours. The outcomes of the numerical analysis are presented with the streamlines, isotherms, and variations of the average Nusselt number.

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Section: Introductionmentioning

confidence: 99%

Free convection at different locations of adiabatic elliptic blockage in a square enclosure

Billah,

Hossain,

Asad

et al. 2024

Mathematical Modelling and Numerical Simulation With Applications

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“…Tamunoimi and Ogulu 27 presented the influence of heat transportation on stenotic artery under the supposition of an optically thin fluid. Turkyilmazoglu 28 , 29 discussed the heat transfer for unsteady MHD fluid flow along with varying viscosity also investigated the wall heating of the square type cavity. Sarfaraz et al 30 investigate the influence of the different geometrical shape of stenosis on blood flow.…”

Section: Introductionmentioning

confidence: 99%

Mathematical inspection of heat transfer and unsteady viscous flow in a tunnel with trapezoidal shaped slender wall

Dar

Hussain

et al. 2023

Sci Rep

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An exploration is made to investigate numerically and theoretically the time dependent flow of blood along with heat transfer through abnormal artery having trapezoidal shaped plaque. The flow is taken to be Newtonian, laminar, unsteady and incompressible. A suitable geometrical model is constructed to simulate the trapezoidal stenosis affected artery. The governed 2-dimensional momentum and heat transfer equations are conventionalized by assuming mild trapezoidal stenosis. The renovate partial differential equations are further converted into ordinary differential equations by assist of transformations. The novelty of the work is to consider unsteady blood flow through trapezoidal shape stenosed artery. A technique of finite difference is used to discretize the updated dimensionless model numerically. Comprehensive graphical outcomes for a flow of blood are obtained. The effect of trapezoidal plaque on blood velocity, pressure and temperature are shown by surface graph inside the artery and also shown with the help of line graph.

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“…Their findings revealed that the examination of mean flows indicated a decrease in the kinetic and thermal boundary layer thickness, as well as the average temperature in the bulk region, as the Rayleigh number increased. [17], conducted a numerical investigation into the process of nonuniform wall heating of a square cavity and the resulting free convection. The study concluded that the optimal heat transfer rate is achieved when the heating occurs near the top wall of the heated boundary.…”

Section: Introductionmentioning

confidence: 99%

The Influence of linear Heating on Free Convection in a Cylindrical Enclosure

Mazgar,

Faycal

2023

1790-5044

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The current study aims to numerically investigate free convection airflow within a horizontal cylinder with a linearly heated side wall. The computation of heat transfer and fluid flow structure has been carried out using the finite element software COMSOL Multiphysics. The influence of the heat source position on fluid flow and heat transfer is inspected. Special attention is paid to the effect of Rayleigh number and the heater position on energy efficiency within the cavity. The results indicate that the best heat transfer performance is achieved for low Rayleigh numbers and when the active wall is centered in the vicinity of 90°.

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Exponential nonuniform wall heating of a square cavity and natural convection

Cited by 35 publications

References 49 publications

Free convection at different locations of adiabatic elliptic blockage in a square enclosure

Free convection at different locations of adiabatic elliptic blockage in a square enclosure

Mathematical inspection of heat transfer and unsteady viscous flow in a tunnel with trapezoidal shaped slender wall

The Influence of linear Heating on Free Convection in a Cylindrical Enclosure

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