An exhaustive review on natural convection within complex enclosures: Influence of various parameters

Abdulkadhim, Ammar; Abed, Isam Mejbel; Saïd, Nejla Mahjoub

doi:10.1016/j.cjph.2021.10.012

Cited by 19 publications

(3 citation statements)

References 114 publications

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“…In this type of enclosure, a combination of two basic types is used to create C‐shaped, I‐shaped, and F‐shaped test geometries. Accordingly, the literature review will focus here mainly on articles related to natural convection in complex shapes as there is an abundance of studies related to the simple shapes based on former review papers on natural convective heat transfer (NCHT) within enclosures 5,6 Dogonchi et al 7 used control volume finite element method to study the magnetohydrodynamics (MHD) natural convection within wavy enclosure filled by Cu–water nanofluid. The researchers studied the impact of Rayleigh and Hartmann numbers, the ratio of contraction, and the undulation numbers.…”

Section: Introductionmentioning

confidence: 99%

Analysis of double‐diffusive hydrothermal flow in a domestic stack: The effect of side walls patterns

Hamza,

Abdulkadhim,

Mohsen

et al. 2023

Heat Trans

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Domestic stack is considered to investigate the double‐diffusive laminar natural convection. The working fluid is a gaseous mixture that has similar physical properties to carbon dioxide. Knowing the patterns of gaseous mixture distribution and determining the carbon deposit regions can help in carbon capture problems. The present study uses the finite element method to numerically examine the double ratio‐diffusive physical phenomena in a rectangular‐trapezoidal enclosure and to simulate the stack under a wide range of dimensionless parameters, such as buoyancy ratio , Lewis number , and Rayleigh number for different aspect ratios. Nine different cases of the geometrical ratio are selected to cover most possible design configurations. The results indicate that increasing the Lewis number leads to augmented solutal transport but reduces heat transfer. However, both heat and mass transfer are observed by increasing the buoyancy ratio. It is worth mentioning that increasing the ratio of upper side length to base length from to leads to a significant increase in mass transfer by 75% and heat transfer enhancement ratio by around 50%.

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Section: Introductionmentioning

confidence: 99%

Analysis of double‐diffusive hydrothermal flow in a domestic stack: The effect of side walls patterns

Hamza,

Abdulkadhim,

Mohsen

et al. 2023

Heat Trans

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“…Mixed convection in enclosures of various configurations has captured numerous researchers' interest over the years owing to its broad technological engagements, such as in the cooling of electronic devices, nuclear reactors, chemical processing equipment, lubricating groves, and in the manufacturing of float glass and coating. Some of the previous works done on mixed convective heat transfer are captured in various studies 1–6 . Olayemi et al 7 considered lid‐driven convective flow in a square cavity exposed to different modes of heating and submitted that the maximum heat transfer took place close to the lower wall and the highest value of flow velocity occurrence at y = 0.4 in the vertical midplane at x = 0.5.…”

Section: Introductionmentioning

confidence: 99%

“…Some of the previous works done on mixed convective heat transfer are captured in various studies. [1][2][3][4][5][6] Olayemi et al 7 considered lid-driven convective flow in a square cavity exposed to different modes of heating and submitted that the maximum heat transfer took place close to the lower wall and the highest value of flow velocity occurrence at y = 0.4 in the vertical midplane at x = 0.5. Khan et al 8 analyzed lid-driven convective flow in a trapezoidal configuration housing a cylinder that was subjected to rotary motion.…”

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

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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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Hybrid-lattice Boltzmann Method for the Simulation of Magnetohydrodynamic Conjugate Heat Transfer and Entropy Generation in Three Dimensions

Benhamou,

Channouf,

Lahmer

et al. 2023

Arab J Sci Eng

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An exhaustive review on natural convection within complex enclosures: Influence of various parameters

Cited by 19 publications

References 114 publications

Analysis of double‐diffusive hydrothermal flow in a domestic stack: The effect of side walls patterns

Analysis of double‐diffusive hydrothermal flow in a domestic stack: The effect of side walls patterns

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

Hybrid-lattice Boltzmann Method for the Simulation of Magnetohydrodynamic Conjugate Heat Transfer and Entropy Generation in Three Dimensions

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