Entropy-based analysis and economic scrutiny of magneto thermal natural convection enhancement in a nanofluid-filled porous trapezium-shaped cavity having localized baffles

Zidan, Ahmed M.; Tayebi, Tahar; Dogonchi, A.S.; Chamkha, Ali J.; Hamida, Mohamed Bechir Ben; Galal, Ahmed M.

doi:10.1080/17455030.2022.2084651

Cited by 37 publications

(7 citation statements)

References 37 publications

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“…Some related research can be found in Ikram and colleagues. [40][41][42][43][44][45] The aspiration of fluid in a cavity has significant effects on convection HT. It has been observed by Biswas et al 46 that the implementation of aspiration can intensify HT in low-power MHD thermal applications.…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal performance and entropy generation analysis in a novel cavity design with circular cylinder

Saha,

Jihan,

Ahammad

et al. 2024

Heat Trans

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Analyzing fluid dynamics and heat transfer holds significant importance in the design and enhancement of engineering systems. The current investigation utilizes the finite element method to explore natural convection and heat transfer intricacies within a novel cavity containing an inner circular cylinder under steady and laminar flow conditions. The principal aim of this study is to assess the impact of Rayleigh number (Ra), Bejan number (Be), and the presence of adiabatic, hot, and cold cylinders on heat transfer, entropy generation, and fluid flow. The range of Ra considered in this investigation spans from 103 to 106, while the Prandtl number for the air is fixed at 0.71. The findings illustrate that the presence of a cylinder leads to higher Be as Ra increase, compared to scenarios where no cylinder is present. This observation suggests that buoyancy forces dominate in the absence of a cylinder, resulting in significantly enhanced convective heat transfer efficiency. However, the presence of a heated cylinder within the tooth‐shaped cavity exerts a substantial influence on the overall thermal performance of the system. Notably, the average Nusselt Number (Nu) experiences a remarkable increase of 41.97% under the influence of a heated cylinder, when compared to situations where a cold cylinder is present. This elevated average Nu signifies improved heat transfer characteristics, ultimately resulting in an overall improvement in the thermal system's efficiency.

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Section: Introductionmentioning

confidence: 99%

Enhanced thermal performance and entropy generation analysis in a novel cavity design with circular cylinder

Saha,

Jihan,

Ahammad

et al. 2024

Heat Trans

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“…Their results showed that the length of the hot wall, its position, the number of waves on the walls, and the concentration of nanoparticles are among the most critical parameters to control the convection flow and heat transfer. In order to predict the natural heat transfer inside a porous trapezoidal cavity with baffles on its side walls that are in adiabatic conditions, a modeling approach is presented by Zidan et al 33 . It also evaluates the use of nanomaterials to improve natural convection through economic feasibility.…”

Section: Introductionmentioning

confidence: 99%

Optimization of wavy trapezoidal porous cavity containing mixture hybrid nanofluid (water/ethylene glycol Go–Al2O3) by response surface method

Alipour

Jafari

Hosseinzadeh

2023

Sci Rep

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Increasing thermal performance and preventing heat loss are very important in energy conversion systems, especially for new and complex products that exacerbate this need. Therefore, to solve this challenge, a trapezoidal cavity with a wavy top wall containing water/ethylene glycol GO–Al2O3 nanofluid is simulated using Galerkin finite element method. The effects of physical parameters affecting thermal performance and fluid flow, including porosity (ℇ), thermal radiation (Rd), magnetic field angle (α), Rayleigh number (Ra) and Hartmann number (Ha), are investigated in the determined ratios. The results of applied boundary conditions showed that the optimal values for Ra, Ha, ℇ, Rd and α are 1214.46, 2.86, 0.63, 0.24 and 59.35, respectively. Considering that changes in radiation have little effect on streamlines and isothermal lines. Optimization by RSM and Taguchi integration resulted in optimal Nu detection. It provided a correlation for the average Nu based on the investigated determinants due to the conflicting influence of the study factors, which finally calculated the highest average Nusselt number of 3.07. Therefore, the ideal design, which is the primary goal of this research, increases the thermal performance.

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“…Mondal et al 27 created CuO–H2O nanofluids in a 2D circular geometry with a rhombus-shaped barrier that keeps two neighbouring high walls at the same temperature. Zidan et al 28 provided a modelling approach for predicting thermal free convection inside a permeable trapezium-shaped zone with adiabatic side-wall baffles. Seyyedi et al 29 presented a Second law study of magneto-free convection in a wavy-hexagonal permeable enclosure filled with nanofluid.…”

Section: Introductionmentioning

confidence: 99%

Magneto radiative and heat convective flow boundary layer in Maxwell fluid across a porous inclined vertical plate

Sudarmozhi

Iranian

Khan

et al. 2023

Sci Rep

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Heat transport in a 2D steady radiative boundary layer with Maxwell fluid flow and the influence of heat generation and MHD has been studied across a porous inclined vertical plate. Through similarity transformation, the mathematical modelling is converted to ODEs, and the built-in solver Bvp4c via MATLAB is used to solve. The linear movement of an inclined porous plate introduced the flow. The MHD (M), Prandtl number (Pr), radiation (Rd), Rayleigh number (Ra), local Nusselt number (Nux), angle of inclination (γ), and material relaxation time (β) have a considerable impact on the flow field as a result. The local Nusselt numbers and the skin friction coefficient are also given as numbers. The validation with the numerical solution is presented. The results are shown, and a thorough physical analysis has been done. The temperature of the fluid rises due to the greater electric field, increasing the heat transfer on the inclined plate. However, skin friction increases dramatically as the heat radiation parameter rises. The critical findings of this study are that the temperature profile increases and the velocity profile lower as the inclination angle increases. The Maxwell fluid parameter raises the velocity profile as well.

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Entropy-based analysis and economic scrutiny of magneto thermal natural convection enhancement in a nanofluid-filled porous trapezium-shaped cavity having localized baffles

Cited by 37 publications

References 37 publications

Enhanced thermal performance and entropy generation analysis in a novel cavity design with circular cylinder

Enhanced thermal performance and entropy generation analysis in a novel cavity design with circular cylinder

Optimization of wavy trapezoidal porous cavity containing mixture hybrid nanofluid (water/ethylene glycol Go–Al2O3) by response surface method

Magneto radiative and heat convective flow boundary layer in Maxwell fluid across a porous inclined vertical plate

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