Investigation of moving trapezoidal and exponential fins with multiple nonlinearities

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

doi:10.1016/j.asej.2022.101959

Cited by 11 publications

(7 citation statements)

References 46 publications

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“…In addition, various parameters are compared with the literature. 17,35,50 It has been observed that the temperature profile of the rectangular and trapezoidal fins decreases as Hartmann number, convection, and radiation parameters increase, but increases as internal heat generation, Peclet number, and ambient temperature parameters decrease. The present work in Figures 2-4 also shows a similar result for trapezoidal and rectangular fins under the effect of the magnetic field.…”

Section: Resultsmentioning

confidence: 99%

“…Using multiple nonlinearities on trapezoidal and exponential fins, the numerical analysis revealed that exponential fins were more productive and transmitted more heat than trapezoidal fins. 16,17 Mueller and Abu-Mulaweh 18 presented numerical and experimental measurements of a fin that was cooled through convection and radiation. The results of this analysis indicate that radiation transmits heat nearly 15%-20% of the total heat.…”

Section: Introductionmentioning

confidence: 99%

“…As a result of the thermogeometric parameter and thermal conductivity, heat transfer across fin bases increases significantly. Using multiple nonlinearities on trapezoidal and exponential fins, the numerical analysis revealed that exponential fins were more productive and transmitted more heat than trapezoidal fins 16,17 . Mueller and Abu‐Mulaweh 18 presented numerical and experimental measurements of a fin that was cooled through convection and radiation.…”

Section: Introductionmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative numerical analysis of magnetized rectangular and trapezoidal fins

Ullah,

Din,

Ali

2024

Heat Trans

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“…This influence particularly affects fins made of copper and aluminium. The trapezoidal-shaped and exponential-type fins with multiple nonlinearities have been discussed numerically, which revealed that the heat transfer and productivity of the exponential fins are greater than those of the trapezoidal fin [5,6]. Besides convection, heat transfer through radiation is another prominent kind of mechanism.…”

Section: Introductionmentioning

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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“…The results showed enhancement in heat transfer via square pin finned. Zia Ud din et al [10] numerically investigates the performance of moving longitudinal and exponential fins with variable thermal conductivity, thermal emissivity, and heat transfer coefficient. Their findings indicate that the exponential fin exhibits higher heat transfer rates compared to the trapezoidal fin.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Enhancement in Cooling Jacket of Liquid Cooled Spark Ignition Engine

et al. 2023

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Thermal stresses due to long running of spark ignition engine often results in wear and tear of cylinder near the top dead center (TDC). These high thermal stresses at TDC arise due to the high temperature gradient during spark ignition. This situation eventually decreases the life and efficiency of an engine. In this study, the numerical and analytical analysis was carried out on 1298 cc in line four stroke spark ignition (SI) engine having a power output of 63 kW to drop the peak temperature at TDC. to reduce the peak value of temperature, square pin fins were used on the surface of engine cylinder wall near TDC. A parametric study is performed to get an optimal solution for removal of the peak temperature load at TDC. The results showed that the fins with dimension of 4 × 4 × 4 mm3 along with uniform spacing of 2 mm provide the optimum solution. It has been observed that the peak temperature at TDC dropped down considerably from 160 °C to 133 °C (a percentage reduction of 16.87%) for the pin fins case as compared to without the fin case. Furthermore, the heat transfer effectiveness for the optimum case was calculated as 3.32, whereas for numerical and analytical study it was calculated as 3.43. The error recorded between both the values was limited to 3.2%.

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Investigation of moving trapezoidal and exponential fins with multiple nonlinearities

Cited by 11 publications

References 46 publications

Comparative numerical analysis of magnetized rectangular and trapezoidal fins

Comparative numerical analysis of magnetized rectangular and trapezoidal fins

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

Heat Transfer Enhancement in Cooling Jacket of Liquid Cooled Spark Ignition Engine

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