Heat transfer analysis: convective-radiative moving exponential porous fins with internal heat generation

Din, Zia Ud; Ali, Amir; Khan, Zareen A.; Zaman, Gul

doi:10.3934/mbe.2022535

Cited by 6 publications

(2 citation statements)

References 49 publications

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“…It is found in Gireesha et al 46 that the porosity and wet nature of a convective–radiative trapezoidal fin enhance the cooling capability of the fin. The comparative study of exponential fin versus trapezoidal fin was conducted numerically along with multiple nonlinearities in Ud Din et al 47 This study compares the thermal efficiency and performance of magnetized rectangular and magnetized trapezoidal fins through numerical results that take heat generation into account. When dimensionless parameters are introduced into the equation, the governing equation becomes nondimensional, and the numerical solution is derived from the shooting technique to compare both magnetized rectangular fins and magnetized trapezoidal fins, as well as the effects of the parameters included.…”

Section: Introductionmentioning

confidence: 99%

Comparative numerical analysis of magnetized rectangular and trapezoidal fins

Ullah,

Din,

Ali

2024

Heat Trans

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Fins are extended surfaces that are designed to dissipate heat from hot sources to their surroundings. The different profiles of fins are used on the equipment surface to improve heat transfer. Fins are extensively used in refrigeration, solar panels, superheaters, electric equipment, automobile parts, combustion engines, and electrical equipment. On the basis of these applications, we study the thermal performances of magnetized convective–radiative‐rectangular fins with magnetized trapezoidal fins with internal heat generation. The shooting technique is used to numerically study the suggested model. It is revealed that magnetized trapezoidal fins transfer more heat than magnetized rectangular fins. It is also revealed that magnetized trapezoidal fins have higher thermal transfer competence than magnetized rectangular fins. When thermal conductivity, radiation–conduction number, and convection–conduction number increase, the fin's efficiency increases. In addition, a Hartmann number indicating the magnetic effect is found to improve heat transfer from the fins. Increasing the magnetism parameter from 0.1 to 0.3 reduced temperature by approximately 4.5%, changing internal heat generation from 0.1 to 0.5 increased temperature distribution by approximately 16%, and changing the Peclet number from 0.1 to 0.3 increased temperature distribution by approximately 15%. The effect of heat transfer coefficient, thermal radiation–conduction and convection–conduction, and dimensionless radiation are also investigated on the performance of the fins.

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Section: Introductionmentioning

confidence: 99%

Comparative numerical analysis of magnetized rectangular and trapezoidal fins

Ullah,

Din,

Ali

2024

Heat Trans

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“…The materials use for the manufacturing of fins highly depend on corrosion resistant, light weight, outstanding thermal conductivity and cast ability; thus, these are key factors in selecting the material. The fins are categorized according to their functioning condition and available area and the possible functional fins are straight fins 1 – 3 radial and rectangular fins 4 , annular fin and pin fin 5 , 6 . These fins apparatuses further divided into subclasses based on their various cross sections.…”

Section: Introductionmentioning

confidence: 99%

Thermal management in annular fin using ternary nanomaterials influenced by magneto-radiative phenomenon and natural convection

Alharbi

Abbasi

Bani‐Fwaz

et al. 2023

Sci Rep

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Annular fin is a particular mechanical setup for heat transfer that varies radially and frequently utilize in applied thermal engineering. Addition of annular fin to working apparatus enhance the surface area in contact with surrounding fluid. Other potential areas of fin installation are radiators, power plant heat exchangers and also it plays significant role in sustainable energy technologies. The major objective of this research is to introduce an efficient annular fin energy model influenced by thermal radiation, magnetic forces, coefficient of thermal conductivity, heating source with addition of modified Tiwari–Das model. Then, numerical treatment performed to acquire the desired efficiency. From the results, it is scrutinized that the fin efficiency significantly improved by strengthening the physical strength of $${\alpha }_{1}, {\alpha }_{2}$$ α 1 , α 2 and $${\gamma }_{1}$$ γ 1 and the use of ternary nanofluid make it more efficient. Addition of heating source $${Q}_{1}$$ Q 1 make the fin more efficient and radiative number is better to cool it. The role of ternary nanofluid observed dominant throughout the analysis and the results validated with existing data.

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Impact of stretching and shrinking on the thermal profile and efficiency of a wet and porous longitudinal fin in motion subject to convection and radiation

Lalith Kumar,

Nagaraja,

Gireesha

2024

Heat Trans

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We consider heat transfer with convection and radiation effect on a longitudinal wet and porous fin. The trapezoidal fin moving at a constant speed is subject to stretching and shrinking, and their influence on the fin's heat transfer rate and thermal distribution is investigated. The governing equation of the model mentioned above is nondimensionalized, and the resultant second‐order nonlinear boundary value problem is solved numerically using the Chebyshev collocation method and validated using the shooting technique. All the simulations are carried out using MATLAB software. The impact of the critical dimensionless parameters on the fin tip temperature, the thermal profile, and the base heat transfer rate are analyzed graphically. Fin efficiency is also computed, and the influence of the pertinent parameters on it is inferred. For a moving fin, the shrinking mechanism favors a faster base heat transfer, an uptick of about 9%, and the stretching fin enhances thermal distribution and efficiency by around 3% and 14%, respectively. The rise is further accelerated with the enhancement of the Peclet number. The fin tapering from that of a rectangular profile () helps achieve a faster heat transfer rate along the fin length, a gain of nearly 22%, when the fin taper ratio varies from 0 to 0.8.

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Heat transfer analysis: convective-radiative moving exponential porous fins with internal heat generation

Cited by 6 publications

References 49 publications

Comparative numerical analysis of magnetized rectangular and trapezoidal fins

Comparative numerical analysis of magnetized rectangular and trapezoidal fins

Thermal management in annular fin using ternary nanomaterials influenced by magneto-radiative phenomenon and natural convection

Impact of stretching and shrinking on the thermal profile and efficiency of a wet and porous longitudinal fin in motion subject to convection and radiation

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