Analysis of transient heat transfer in radial moving fins with temperature-dependent thermal properties

Ndlovu, Partner L.; Moitsheki, Raseelo Joel

doi:10.1007/s10973-019-08306-5

Cited by 16 publications

(6 citation statements)

References 25 publications

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“…The selection of proper geometries is critical for facilitating the heat dissipation process. Selecting an acceptable geometry when considering geographical or unique limitations necessitates both computational and numerical analysis [ (Ejlali et al, 2009;Farsad et al, 2011;Huang et al, 2015;Balan et al, 2017;Ishak et al, 2019;Ndlovu and Moitsheki, 2019;Jeong et al, 2020;Zhang et al, 2020)]. These optimization strategies, as well as the design's compactness, are critical in today's current applications.…”

Section: Introductionmentioning

confidence: 99%

A design approach for thermal enhancement in heat sinks using different types of fins: A review

Gaikwad

Sathe²,

Sanap³

2023

Front. Therm. Eng.

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This article provides an in-depth overview of thermal heat sink design and optimization. Heat transfer enhancement strategies are discussed in detail, followed by fin design trends and geometries, and a discussion on different fin configurations and their merits is also presented. Important results and findings of experiments concerning the design and optimization of fin geometries have been summarized. For complex heat dissipation applications, researchers have been studying different fin arrangements especially, inclined fins, to maximize the performance of the heat sinks. Along with innovative fin designs, microchannels for heat dissipation are gaining attention due to their. Recent advances in this domain have been discussed. New components are becoming more compact and advanced as a result of technological breakthroughs in electronics and control systems; hence, the use and optimization of heat sinks for modern applications are also discussed in this article.

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Section: Introductionmentioning

confidence: 99%

A design approach for thermal enhancement in heat sinks using different types of fins: A review

Gaikwad

Sathe²,

Sanap³

2023

Front. Therm. Eng.

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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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“…Mosayebidorcheh et al [27] investigated about the influence of unsteady temperature feature on the various profiles of longitudinal fin by applying the hybrid approximation method. The transient effect on the moving fin of radial structure has been examined numerically by Ndlovu [28]. Sowmya et al [29] have presented about the performance of different shapes of porous fin under wetted condition under unsteady temperature condition and explained the efficiency of various fin profiles.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of transient thermal behaviour of fully wet and porous moving semi-spherical fin

Keerthi¹,

Gireesha²,

Sowmya³

2022

Phys. Scr.

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A variety of engineering applications demand efficient and adaptable fin structures for the intensification of heat exchange. The semi-spherical fin structures are useful in the field of refrigeration, chemical processing systems, aerospace etc. In this regard, the present article numerically investigates the transient thermal behaviour of a fully wetsemi-spherical fin.The study incorporates the Darcy model as the fin is made up of porous material. Further, the fin is exposed to convective-radiative heat exchange and is subject to uniform motion. The heat balance equation has been reduced to get a nonlinear partial differential equation (PDE) which is computed by employing the finite difference method (FDM). The dimensionless terms are grouped together and their influence on the temperature distribution in a semi-spherical fin is studied. Also, the instantaneous heat transfer rate and the transient fin efficiency have been modelled and their variations with relevant parameters have been graphically depicted. And these are found be strong functions of Peclet number, wet porous nature and dimensionless time. As a main outcome the semi-spherical fin efficiency is positively influenced by the Peclet number. Along with the fundamental point of interest the results presented benefit the fin designing purposes.

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Analysis of transient heat transfer in radial moving fins with temperature-dependent thermal properties

Cited by 16 publications

References 25 publications

A design approach for thermal enhancement in heat sinks using different types of fins: A review

A design approach for thermal enhancement in heat sinks using different types of fins: A review

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

Numerical investigation of transient thermal behaviour of fully wet and porous moving semi-spherical fin

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