Thermal analysis of a constructal T-shaped porous fin with simultaneous heat and mass transfer

Hazarika, Saheera Azmi; Deshamukhya, Tuhin; Bhanja, Dipankar; Nath, Sujit

doi:10.1016/j.cjche.2017.03.034

Cited by 22 publications

(10 citation statements)

References 49 publications

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“…In a subsequent study, Kundu and Bhanja 10 developed an analytical model to determine the optimum dimensions of longitudinal porous fins by performing a comparative study of three different models. In the year 2017, similar trend in results was reported by Hazarika et al 11 when they carried out a heat and mass transfer problem in a constructal T-shaped porous fin. The authors reported a scheme to improve the heat transfer rate in porous T-shaped fins as compared to their solid counterparts by judicial selection of parameter combination, especially porosity.…”

Section: Introductionsupporting

confidence: 80%

Optimization of constructal T-shaped porous fins under convective environment using Swarm Intelligence Algorithms

Deshamukhya

Bhanja

Nath

2020

Proceedings of the Institution of Mechanical Engineers, Part G:

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Constructal T-shaped porous fins transfer better heat compared to the rectangular counterparts by improving the heat flow through the low resistive links. This type of fins can be used in aerospace engines which demand faster removal of heat without adding extra weight of the overall assembly. Here, in this study, three powerful nature-inspired metaheuristic algorithms such as particle swarm optimization, gravitational search algorithm, and Firefly algorithm have been used to optimize the dominant thermo physical as well as geometric parameters which are responsible for transferring heat at faster rates from the fin body satisfying a volume constraint. The temperature distribution along the stem and the flange has been plotted, and the effect of important parameters on the efficiency has been determined. Three different volumes are selected for the analysis, and the results have shown marked improvement in the optimized heat transfer rate. Particle swarm optimization has reported an increase of 0.81%, while Firefly algorithm reports 0.83% improvement as we increase the fin volume from 500 to 1000 and 0.19% (by PSO) and 0.4% (by FA) as the volume increases from 1000 to 1500. The paper also presents a scheme of reducing the computational effort required by the algorithms to converge around the optimum point. While a reduction of 14.36% computational effort has been achieved in particle swarm optimization’s convergence time, Firefly algorithm took 24.64% less time to converge at the near-optimum point. While particle swarm optimization has converged at better optimal points compared to Firefly algorithm and Gravitational search algorithm, Gravitational search algorithm has outperformed the two algorithms in terms of computational time. Gravitational search algorithm took 61.72 and 29.33% less time to converge as compared to particle swarm optimization and Firefly algorithm, respectively.

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Section: Introductionsupporting

confidence: 80%

Optimization of constructal T-shaped porous fins under convective environment using Swarm Intelligence Algorithms

Deshamukhya

Bhanja

Nath

2020

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…Here, the skin surface is defined at x = 0, while the body core at x = L . Equation is solved using the DTM . The DTM generates an analytical solution in the form of an infinite power series and the accuracy of the solution can be increased by taking more number of terms in the solution.…”

Section: Modeling and Methodologymentioning

confidence: 99%

Fundamental solution of steady and transient bio heat transfer equations especially for skin burn and hyperthermia treatments

Deka

Bhanja

Nath

2018

Heat Trans. Asian Res.

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In the field of bio heat transfer, as of now, the main concern of researchers lies in the proper and accurate thermal damage of the diseased tissues without destroying or damaging the neighboring healthy tissues during the tumor treatment. The present work aims to develop a new approach toward solving the bio heat transfer equations for the skin burn and hyperthermia treatments. Both analytical and numerical solutions are proposed. For the analytical study, a differential transform method is used to solve steady and unsteady state heat equations. The finite volume method is adopted to solve these equations numerically, which provides a better scope to solve the highly nonlinear complex equations. To obtain a complete solution, a code is developed in MATLAB and MATHEMATICA. The variation of different parameters, such as perfusion constant, space heating, surface step heating, and thermal conductivity, with time were observed. Apart from the above analysis of temperature distribution during skin burn through the spilling of hot beverage, its numerical solution was also performed for this problem at different boundary conditions. It was observed that with the help of the temperature distribution, depending on the time and the severity of the burn, different ranges of depths of the burn can be determined.

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“…The results showed that at an optimum condition more heat transfer was observed at a porous fin than that of the solid fin, which was a beneficial design characteristic to select the porous condition. Hazarika et al 92 performed a thermal analysis of a T‐shaped porous fin with simultaneous heat and mass transfer. They used nonlinear governing equations with the DTM to solve the distribution of temperature.…”

Section: Analytical Studiesmentioning

confidence: 99%

Improvement of heat transfer through fins: A brief review of recent developments

Maji¹,

Choubey

2020

Heat Trans

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Fins or extended surfaces are generally used in heat exchangers to enhance heat transfer between the main surface and ambient fluid. Various types of simple-shaped fins, namely, rectangular, square, annular, cylindrical, and tapered, have been used with different geometrical combinations. To satisfy industrial demand, different trials have also been carried out for designing optimized fins. The optimization of fins can be performed either by enhancing heat dissipation at an exact fin weight or by diminishing the weight of the fin by precise heat dissipation. Recently a notable amount of work on some typical fins, like, porous fins and perforated fins, has also been carried out. This paper presents a brief review on heat transfer enhancement using fins of different types considering variable thermophysical and geometric parameters, which will also be useful for future use of geometrical modifications of extended surfaces, based on the cost and availability of space.analytical approach, computational approach, experimental approach, perforated fin, porous fin | INTRODUCTIONAdvanced technologies need high-performance heat transfer equipment. Techniques for enhancing the heat transfer rate are classified into two categories: active and passive methods. In the design point of view, active methods are complex as they require some extraneous power input for necessary flow adjustments and to improve the heat transfer rate and thus applications are limited. On the other hand, passive methods require geometrical or surface adjustments to the flow passage by incorporating additional devices. Additionally, by interrupting or varying the existing flow behavior (except for extended surfaces); higher heat transfer coefficients are promoted through this method, which is also followed by an increase in the corresponding pressure drop. The amount of conduction, convection, and radiation of an object shows the amount of heat it transfers. The heat transfer rate is enhanced by increasing the temperature difference between the object and the environment or by enhancing the coefficient of convective heat transfer or by maximizing the surface area of the body. In some cases, it is not appropriate or cost effective to alter the first two options. Introducing a fin to a body, however, expands the surface area and sometimes this is a cost-effective solution for heat transfer problems. Extended surfaces or fins are illustrations of passive methods that are generally used in different industrial applications for the enhancement of heat transfer between the primary surface (heat sink) and the surrounding fluid. Currently reducing the cost and size of fins is the key target of the fin industry. This demand is generally met by the high-thermal-conductivity and costly metals used to fabricate finned surfaces. Many efforts have been made to construct optimized fins. (a) By changing the size and shape of the solid fin: Instead of a longitudinal rectangular solid fin, if the geometry of fin design is changed, the performance parameters and heat tr...

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Thermal analysis of a constructal T-shaped porous fin with simultaneous heat and mass transfer

Cited by 22 publications

References 49 publications

Optimization of constructal T-shaped porous fins under convective environment using Swarm Intelligence Algorithms

Optimization of constructal T-shaped porous fins under convective environment using Swarm Intelligence Algorithms

Fundamental solution of steady and transient bio heat transfer equations especially for skin burn and hyperthermia treatments

Improvement of heat transfer through fins: A brief review of recent developments

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