Numerical Investigation of Natural Convection and Radiation in a Moving Radial Porous Fin

Gireesha, B. J.; Sowmya, G.; Nikitha, M.

doi:10.37314/jjem.2020.040101

Cited by 2 publications

(2 citation statements)

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“…In practice, the extended surfaces are attached to heat transfer devices and components to facilitate the rate of heat transfer from the prime surface. Such an important passive method of heat transfer enhancements has provoked several studies over the past decades [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,...…”

Section: Introductionmentioning

confidence: 99%

Exploring the Effect of Peclet Number on the Transient Thermal Response of a Convective-Radiative Moving Porous Fin

Sobamowo

Yinusa

Berrehal

et al. 2023

J. ADV. ENG. COMPUT.

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In the thermal analysis of moving fins, there have been conflicting results as well as discussion on the effects of Peclet number on the thermal responses of fins. While some authors agreed the increase in Peclet number, increases the fin temperature, the other class of researchers is of the opinion that when the Peclet number increases, the fin temperature decreases. It could be said that many of these divergence views arose from the physics of the problem as well as the mathematical model governing the heat transfer problem. Therefore, in this work, through modeling from the first principle, the effect of Peclet number on the thermal behaviour of convective-radiative moving porous fin is explored. First, a transient thermal model of a convective-radiative rectangular moving porous fin with temperature-dependent internal heat generation is developed. The developed thermal model is nondimensionalized to bring up the needed Peclet number in the dimensional governing equation of the heat transfer process. Thereafter, the model is solved analytically using the Laplace transform method and the effect of Peclet number on the thermal behaviour of the fin is investigated and discussed. It is hoped that the present study will help for better understanding of the thermal problems in extended surfaces.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.

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Section: Introductionmentioning

confidence: 99%

Exploring the Effect of Peclet Number on the Transient Thermal Response of a Convective-Radiative Moving Porous Fin

Sobamowo

Yinusa

Berrehal

et al. 2023

J. ADV. ENG. COMPUT.

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“…A DTM study was conducted by [27] to evaluate the extreme heat transfer rate of annular fins under radiation effect. The numerical investigation of a radiating radial-shaped porous fin subject to convection and motion has been conducted [28][29][30]. It is observed that the higher values of the convective parameter and the radiative parameter improve the rate of heat transfer from the fin surface.…”

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confidence: 99%

Investigation of the Stretching/Shrinking of a Convective-Radiative Radial Fin

Ullah,

De la Sen,

Ali

et al. 2023

International Journal of Energy Research

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Fins are extended surfaces that increase the surface area for heat transfer between a hot source and an ambient fluid. Heat transfer is increased by adding radial or concentric annular fins to the outside surface of a circular conduit. The fins are used in devices that exchange heat such as car radiators, electrical equipment, and heat exchangers. Based on these applications, the current article examines a stretching/shrinking convective-radiative radial fin. Additionally, parameters such as the Peclet number, surface temperature, and ambient temperature are taken into account. The shooting technique is used to investigate the thermal profile, fin’s tip temperature, and efficiency of the radial fin. It is revealed that the thermal profile enhances with stretching, the Peclet number, surface temperature, and ambient temperature, while declining with radiative and convective parameters. It is observed that the radial fin’s tip temperature versus stretching/shrinking increases with increasing values of the Peclet number and ambient and surface temperatures, but the fin’s tip temperature diminishes with increasing convective and radiative parameters. Additionally, when the radiative and convective parameters increase, efficiency also increases. However, when the Peclet number, surface temperature, and ambient temperature increase, the efficiency decreases. As a result of increasing the convection parameter N c from 0.1 to 0.3, the temperature distribution increases about 7%, and an increase of 5% in temperature distribution is achieved by increasing the radiation parameter N r from 0.1 to 0.3, and when the peclet number P e is increased from 0.3 to 0.8, the temperature distribution decreases by approximately 0.5%. It is also revealed that when the shrinking effect is exposed to a stretching/shrinking moving fin along with the radiative parameter, the thermal performance of the radial fin improves. From the results, it is concluded that stretching/shrinking radial fins improves efficiency and performance. Finally, a comparative study has also been made between the present and published results, and for every case study, superiority of results obtained from the present model is noticed and the degree of supremacy increases with the increase in condensation rate of vapor on fin surfaces.

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Numerical Investigation of Natural Convection and Radiation in a Moving Radial Porous Fin

Cited by 2 publications

References 0 publications

Exploring the Effect of Peclet Number on the Transient Thermal Response of a Convective-Radiative Moving Porous Fin

Exploring the Effect of Peclet Number on the Transient Thermal Response of a Convective-Radiative Moving Porous Fin

Investigation of the Stretching/Shrinking of a Convective-Radiative Radial Fin

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