Unsteady natural convection of water adjacent to the sidewall of a differentially heated cavity with multiple fins

Sadeghi, Hadi Mohammadjafari; Mohammadpour, M.; Babayan, M.; Sojoudi, Atta; Chamkha, Ali J.

doi:10.1016/j.icheatmasstransfer.2020.104642

Cited by 6 publications

(2 citation statements)

References 53 publications

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“…[30][31][32] Hoseinzadeh et al 33 compared analytical and numerical methods to study of heat transfer though a porous fin with rectangular cross section. Sadeghi et al 34 investigated natural convection for a multifin system. Tayebi et al 35 investigated the thermoeconomic and entropy generation in the enclosure equipped with fins.…”

Section: Differential Transformation Methods 20mentioning

confidence: 99%

Numerical solution for a porous fin thermal performance problem by application of Sinc collocation method

Nabati

Salehi

Taherifar

2021

Math Methods in App Sciences

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Heat transfer can be enhanced in various equipment by utilizing fins that have pores in their media. Efforts have been made to solve the porous fins problem by numerical, semianalytical, and analytical methods. In this paper, after the extraction of equations and the expression of boundary conditions, the Sinc collocation method is employed for problem solving the first time. By using the properties of the Sinc collocation method, the nonlinear problem is discritized into a nonlinear system of equations. The results support the accuracy and speed of the solution. The effects of effective physical parameters such as fins porosity, thermal conductivity of fin, Raley's number, and Darcy parameter have been considered in solving the problem. Also, the variations in temperature distribution, efficiency, and performance of fins are investigated. Therefore, changes in the parameters of the solving method indicate the convergence of the problem in the domain of many issues. In general, the results show that the proposed method can be considered as a powerful method for solving different types of fines.

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Section: Differential Transformation Methods 20mentioning

confidence: 99%

Numerical solution for a porous fin thermal performance problem by application of Sinc collocation method

Nabati

Salehi

Taherifar

2021

Math Methods in App Sciences

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“…The problem presented in Roy 15 was further extended by Roy 16 by considering the convective flow in an annulus of chemically reactive liquids bounded by two wavy wall cylinders. Moreover, a range of different configurations, such as square cavity with single or multiple discrete heating sources, 17–19 partially heated porous enclosures, 20–25 L-shaped cavity, 26,27 X-shaped cavity, 28 cavity with multiple fins, 29 C-shaped cavity 30 has been discussed over the past few decades to show-up the application range of nanofluids under different wall conditions.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer characteristics of nanofluids from a sinusoidal corrugated cylinder placed in a square cavity

Parvin

Roy

Saha

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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A numerical study is performed to investigate nanofluids' flow field and heat transfer characteristics between the domain bounded by a square and a wavy cylinder. The left and right walls of the cavity are at constant low temperature while its other adjacent walls are insulated. The convective phenomena take place due to the higher temperature of the inner corrugated surface. Super elliptic functions are used to transform the governing equations of the classical rectangular enclosure into a system of equations valid for concentric cylinders. The resulting equations are solved iteratively with the implicit finite difference method. Parametric results are presented in terms of streamlines, isotherms, local and average Nusselt numbers for a wide range of scaled parameters such as nanoparticles concentration, Rayleigh number, and aspect ratio. Several correlations have been deduced at the inner and outer surface of the cylinders for the average Nusselt number, which gives a good agreement when compared against the numerical results. The strength of the streamlines increases significantly due to an increase in the aspect ratio of the inner cylinder and the Rayleigh number. As the concentration of nanoparticles increases, the average Nusselt number at the internal and external cylinders becomes stronger. In addition, the average Nusselt number for the entire Rayleigh number range gets enhanced when plotted against the volume fraction of the nanofluid.

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Numerical Study on a Conducting Wavy Fin in a Rectangular Cavity

Bouchouicha,

Ladjedel,

Boualem

et al. 2024

J Eng Phys Thermophy

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Unsteady natural convection of water adjacent to the sidewall of a differentially heated cavity with multiple fins

Cited by 6 publications

References 53 publications

Numerical solution for a porous fin thermal performance problem by application of Sinc collocation method

Numerical solution for a porous fin thermal performance problem by application of Sinc collocation method

Heat transfer characteristics of nanofluids from a sinusoidal corrugated cylinder placed in a square cavity

Numerical Study on a Conducting Wavy Fin in a Rectangular Cavity

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