Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin

This study presents the optimum design of the radial heat sink for light-emitting diode (LED) under natural convection. A radial heat sink with a hollow circular base and a P-shape fin type incorporated with either slots or both slots and dimples was numerically investigated using the ANSYS (Fluent...

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Main Authors: Ibrahim Ademola Fetuga, Olabode Thomas Olakoyejo, Adekunle Omolade Adelaja, Joshua Kolawole Gbegudu
Format: Article
Language:English
Published: Institute of Technology and Education Galileo da Amazônia 2022-04-01
Series:ITEGAM-JETIA
Online Access:https://itegam-jetia.org/journal/index.php/jetia/article/view/804
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author Ibrahim Ademola Fetuga
Olabode Thomas Olakoyejo
Adekunle Omolade Adelaja
Joshua Kolawole Gbegudu
author_facet Ibrahim Ademola Fetuga
Olabode Thomas Olakoyejo
Adekunle Omolade Adelaja
Joshua Kolawole Gbegudu
author_sort Ibrahim Ademola Fetuga
collection DOAJ
description This study presents the optimum design of the radial heat sink for light-emitting diode (LED) under natural convection. A radial heat sink with a hollow circular base and a P-shape fin type incorporated with either slots or both slots and dimples was numerically investigated using the ANSYS (Fluent) commercial code, with the aim of achieving better cooling performance at a lower heat sink mass.  The average temperature (Tavg) and mass of the HS for various model designs, namely; Type A (HS with plain fin), Type B (HS with slot) and Type C (HS with both dimples and slot) were compared to select the best configuration. The effect of heat flux (700≤q ̇≤1900)  on average temperature of radial heat sink was investigated. It was found that for all three models, the temperature difference between the HS and the ambient air of the fluid domain linearly increased with heat flux. At q ̇=1900W/m2 , when compared to Type A (HS with plain fins), Type C (HS with slot and dimples) models offered the best cooling performance, followed by Type B where the mass and average temperature of the heat sink is reduced by 13.7% and 5.1%, 8.3% and 1%, respectively.
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spelling doaj.art-9634de4d044844b9820bf0fbc451b6c72022-12-22T02:23:47ZengInstitute of Technology and Education Galileo da AmazôniaITEGAM-JETIA2447-02282022-04-0183410.5935/jetia.v8i34.804Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in finIbrahim Ademola Fetuga0Olabode Thomas Olakoyejo1Adekunle Omolade Adelaja2Joshua Kolawole Gbegudu3Department of Mechanical Engineering, University of Lagos – Akoka. Yaba-Lagos, NigeriaDepartment of Mechanical Engineering, University of Lagos – Akoka. Yaba-Lagos, NigeriaDepartment of Mechanical Engineering, University of Lagos – Akoka. Yaba-Lagos, NigeriaDepartment of Mechanical Engineering, University of Lagos – Akoka. Yaba-Lagos, Nigeria This study presents the optimum design of the radial heat sink for light-emitting diode (LED) under natural convection. A radial heat sink with a hollow circular base and a P-shape fin type incorporated with either slots or both slots and dimples was numerically investigated using the ANSYS (Fluent) commercial code, with the aim of achieving better cooling performance at a lower heat sink mass.  The average temperature (Tavg) and mass of the HS for various model designs, namely; Type A (HS with plain fin), Type B (HS with slot) and Type C (HS with both dimples and slot) were compared to select the best configuration. The effect of heat flux (700≤q ̇≤1900)  on average temperature of radial heat sink was investigated. It was found that for all three models, the temperature difference between the HS and the ambient air of the fluid domain linearly increased with heat flux. At q ̇=1900W/m2 , when compared to Type A (HS with plain fins), Type C (HS with slot and dimples) models offered the best cooling performance, followed by Type B where the mass and average temperature of the heat sink is reduced by 13.7% and 5.1%, 8.3% and 1%, respectively. https://itegam-jetia.org/journal/index.php/jetia/article/view/804
spellingShingle Ibrahim Ademola Fetuga
Olabode Thomas Olakoyejo
Adekunle Omolade Adelaja
Joshua Kolawole Gbegudu
Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin
ITEGAM-JETIA
title Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin
title_full Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin
title_fullStr Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin
title_full_unstemmed Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin
title_short Heat transfer enhancement in a p-shape finned radial heat sink subjected to natural convection: Thermal significance of slot and dimples in fin
title_sort heat transfer enhancement in a p shape finned radial heat sink subjected to natural convection thermal significance of slot and dimples in fin
url https://itegam-jetia.org/journal/index.php/jetia/article/view/804
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