Application of Approximate Analytical Technique Using the Homotopy Perturbation Method to Study the Inclination Effect on the Thermal Behavior of Porous Fin Heat Sink

Oguntala, George; Sobamowo, M. G.; Yinusa, A. A.; Abd‐Alhameed, Raed A.

doi:10.3390/mca23040062

Cited by 9 publications

(9 citation statements)

References 23 publications

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“…Different methodologies including analytical, numerical, and experimental have been reported in the literature on heat transfer enhancement using nanofluids, porous media, geometry, and heat load and surface roughness . Montgomery used FloTherm to computationally investigate the effect of particle deposition on the efficiency of a solid pin fin array.…”

Section: Introductionmentioning

confidence: 99%

Effects of particle fouling and magnetic field on porous fin for improved cooling of consumer electronics

2019

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The combined effect of particulate fouling and magnetic field on the efficiency of a convective-radiative porous fin heatsink with temperature-dependent thermal conductivity is presented. The developed thermal models are solved using differential transformation method. The effects of thermal conductivity, porosity, convection, radiation parameter, and thermal fouling number on the fin thermal efficiency are investigated. The presence of thermal fouling on the surface of the fin is shown to increase the temperature distribution. The presence of particle deposition on the fin surface significantly decreases the rate of heat transfer as additional thermal resistance of the fouling layer decreases the thermal performance of porous fin heatsink. Moreover, the fin efficiency decreases as the value of fouled Biot, Darcy, radiation number, and thermogeometric parameter increases. It is established that M f < M c , which indicates that the efficiency of the fouled fin is greater than the efficiency of the clean fin. Furthermore, the result of the present study is validated with the established results of Chebyshev spectral collocation method and fourth-order Runge-Kutta with shooting method and an error margin of 0.000000023 is established.K E Y W O R D S differential transformation method, particle fouling, porous fin, thermal analysis

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Section: Introductionmentioning

confidence: 99%

Effects of particle fouling and magnetic field on porous fin for improved cooling of consumer electronics

2019

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“…Hence, it becomes more complicated and cannot be integrated into cycle models. In general, low-order mathematical models are preferred for thermal systems [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39]. However, in the case of scroll expanders for small-scale power generation, empirical and semi-empirical models are preferred for performing cycle analysis.…”

Section: Introductionmentioning

confidence: 99%

Parametric investigation of open-drive scroll expander for micro organic rankine cycle applications

Upadhyaya

Gumtapure

2021

Journal of Thermal Engineering

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Organic Rankine cycles (ORC) are used to produce power from low-temperature heat sources. In the low power output range (<10 kW e ), scroll expanders are preferred. However, the performance of the ORC system is dependent on the expander efficiency. The present work focuses on the parametric investigation of the open-drive scroll expander used for micro-organic Rankine cycle. A 5 kW e expander was used and its built-in volume ratio was 3.5. R245fa was used as the working fluid. The analysis was carried out using a well-known semi-empirical model available in the literature. Effect of key parameters such as expansion ratio, shaft speed, and expander inlet temperature on power output and expander efficiency wasevaluated for four different cases. Results showed that, at an inlet pressure of 10 bar, peak efficiency of 58% and 60% was achieved at shaft speeds of 1500 RPM and 2000 RPM respectively. It was also evident that,at higher shaft speeds, the increase in mass flow rate is not sufficient to counter frictional and mechanical losses within the expander. The analysis also indicated that increasing the expander inlet temperature could have a negative impact on the expander efficiency as well as the overall performance of the ORC system, as the thermal energy dissipation is higher at higher inlet temperatures for all cases.

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“…To this end, different new numerical and analytical methods have been proposed in the literature on the subject of thermal improvement using fins 30‐38 . The main objective of the present work is to study the thermal behavior of a [Correction added on 30 May 2020, after first online publication: The word “porous” has been removed from this sentence] fin made of FGM under the influence of Lorentz force to develop thermally viable heat dissipating devices.…”

Section: Introductionmentioning

confidence: 99%

Transient analysis of functionally graded material fin under the effect of Lorentz force using the integral transform method for improved electronic packaging

2020

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In the present work, transient analysis of longitudinal fin of functionally graded material under the influence of Lorentz force is considered. The governing equations of the linear, quadratic, and exponential functions are solved via Bessel, Legendre, and modified Bessel functions, respectively. The study investigates the effects of Lorentz force on the performance of the fin. The study shows that the transient response of the fin is lower in the linear law function compared with the exponential law function. The power law function shows significant energy‐saving capability than the linear class functionally graded material heatsink. Moreover, the thermal characteristic of the fin improves with an increase in the convective, radiative, magnetic field parameter, and nonhomogeneous index. The temperature prediction of the present study using the integral transform method is verified with the fourth‐order Runge‐Kutta method with an excellent agreement established.

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Application of Approximate Analytical Technique Using the Homotopy Perturbation Method to Study the Inclination Effect on the Thermal Behavior of Porous Fin Heat Sink

Cited by 9 publications

References 23 publications

Effects of particle fouling and magnetic field on porous fin for improved cooling of consumer electronics

Effects of particle fouling and magnetic field on porous fin for improved cooling of consumer electronics

Parametric investigation of open-drive scroll expander for micro organic rankine cycle applications

Transient analysis of functionally graded material fin under the effect of Lorentz force using the integral transform method for improved electronic packaging

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