Heat Transfer Enhancement In Microchannel Heat Sink Using Hybrid Technique of Ribs and Secondary Channels

The flow and heat transfer characteristics of microchannel heat sink with secondary oblique channels in alternating direction and rectangular ribs (MC-SOCRR) are studied numerically for Reynolds number (Re) ranging from 100 to 500. The effects of secondary channels and ribs on the Nusselt number and...

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Main Authors:	Ihsan Ali, Ghani, Nor Azwadi, Che Sidik, R., Mamat, G., Najafi, Tan, Lit Ken, Yutaka, Asako, Wan Mohd Arif, Aziz Japar
Format:	Article
Language:	English English
Published:	Elsevier Ltd 2017
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/18386/ http://umpir.ump.edu.my/id/eprint/18386/ http://umpir.ump.edu.my/id/eprint/18386/ http://umpir.ump.edu.my/id/eprint/18386/1/Heat%20Transfer%20Enhancement%20In%20Microchannel%20Heat%20Sink%20Using%20Hybrid%20Technique%20of%20Ribs%20and%20Secondary%20Channels.pdf http://umpir.ump.edu.my/id/eprint/18386/2/Heat%20Transfer%20Enhancement%20In%20Microchannel%20Heat%20Sink%20Using%20Hybrid%20Technique%20of%20Ribs%20and%20Secondary%20Channels%201.pdf

id	ump-18386
recordtype	eprints
spelling	ump-183862018-01-24T02:48:49Z http://umpir.ump.edu.my/id/eprint/18386/ Heat Transfer Enhancement In Microchannel Heat Sink Using Hybrid Technique of Ribs and Secondary Channels Ihsan Ali, Ghani Nor Azwadi, Che Sidik R., Mamat G., Najafi Tan, Lit Ken Yutaka, Asako Wan Mohd Arif, Aziz Japar TJ Mechanical engineering and machinery The flow and heat transfer characteristics of microchannel heat sink with secondary oblique channels in alternating direction and rectangular ribs (MC-SOCRR) are studied numerically for Reynolds number (Re) ranging from 100 to 500. The effects of secondary channels and ribs on the Nusselt number and friction factor are investigated. A comparative analysis has been conducted to the performance of the proposed design with related geometries such as microchannel with rectangular ribs (MC-RR) and microchannel with secondary oblique channels (MC-SOC). The results emphasized the superiority of overall performance of MC-SOCRR over both MC-RR and MC-SOC. The strategy which pursued by new design is the exploitation of larger flow area which provided by secondary channel to reduce pressure drop caused by ribs. Besides, the existence of the ribs in central portion of the channel is utilized to inject more flow through secondary channels for further enhancement in flow mixing. The effect of three geometrical parameters; relative width of secondary channel (λ) relative rib width (β) and angle of secondary channel (θ) on the convective heat transfer and pressure drop have been investigated. The MC-SOCRR with parameters; λ = 0.666, β = 0.5 and angle = 45° yields the best overall performance with Pf = 1.98 at Re = 500. Elsevier Ltd 2017 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/18386/1/Heat%20Transfer%20Enhancement%20In%20Microchannel%20Heat%20Sink%20Using%20Hybrid%20Technique%20of%20Ribs%20and%20Secondary%20Channels.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/18386/2/Heat%20Transfer%20Enhancement%20In%20Microchannel%20Heat%20Sink%20Using%20Hybrid%20Technique%20of%20Ribs%20and%20Secondary%20Channels%201.pdf Ihsan Ali, Ghani and Nor Azwadi, Che Sidik and R., Mamat and G., Najafi and Tan, Lit Ken and Yutaka, Asako and Wan Mohd Arif, Aziz Japar (2017) Heat Transfer Enhancement In Microchannel Heat Sink Using Hybrid Technique of Ribs and Secondary Channels. International Journal of Heat and Mass Transfer, 114. pp. 640-655. ISSN 0017-9310 http://www.sciencedirect.com/science/article/pii/S0017931017319300 DOI: 10.1016/j.ijheatmasstransfer.2017.06.103
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Ihsan Ali, Ghani Nor Azwadi, Che Sidik R., Mamat G., Najafi Tan, Lit Ken Yutaka, Asako Wan Mohd Arif, Aziz Japar Heat Transfer Enhancement In Microchannel Heat Sink Using Hybrid Technique of Ribs and Secondary Channels
description	The flow and heat transfer characteristics of microchannel heat sink with secondary oblique channels in alternating direction and rectangular ribs (MC-SOCRR) are studied numerically for Reynolds number (Re) ranging from 100 to 500. The effects of secondary channels and ribs on the Nusselt number and friction factor are investigated. A comparative analysis has been conducted to the performance of the proposed design with related geometries such as microchannel with rectangular ribs (MC-RR) and microchannel with secondary oblique channels (MC-SOC). The results emphasized the superiority of overall performance of MC-SOCRR over both MC-RR and MC-SOC. The strategy which pursued by new design is the exploitation of larger flow area which provided by secondary channel to reduce pressure drop caused by ribs. Besides, the existence of the ribs in central portion of the channel is utilized to inject more flow through secondary channels for further enhancement in flow mixing. The effect of three geometrical parameters; relative width of secondary channel (λ) relative rib width (β) and angle of secondary channel (θ) on the convective heat transfer and pressure drop have been investigated. The MC-SOCRR with parameters; λ = 0.666, β = 0.5 and angle = 45° yields the best overall performance with Pf = 1.98 at Re = 500.
format	Article
author	Ihsan Ali, Ghani Nor Azwadi, Che Sidik R., Mamat G., Najafi Tan, Lit Ken Yutaka, Asako Wan Mohd Arif, Aziz Japar
author_facet	Ihsan Ali, Ghani Nor Azwadi, Che Sidik R., Mamat G., Najafi Tan, Lit Ken Yutaka, Asako Wan Mohd Arif, Aziz Japar
author_sort	Ihsan Ali, Ghani
title	Heat Transfer Enhancement In Microchannel Heat Sink Using Hybrid Technique of Ribs and Secondary Channels
title_short	Heat Transfer Enhancement In Microchannel Heat Sink Using Hybrid Technique of Ribs and Secondary Channels
title_full	Heat Transfer Enhancement In Microchannel Heat Sink Using Hybrid Technique of Ribs and Secondary Channels
title_fullStr	Heat Transfer Enhancement In Microchannel Heat Sink Using Hybrid Technique of Ribs and Secondary Channels
title_full_unstemmed	Heat Transfer Enhancement In Microchannel Heat Sink Using Hybrid Technique of Ribs and Secondary Channels
title_sort	heat transfer enhancement in microchannel heat sink using hybrid technique of ribs and secondary channels
publisher	Elsevier Ltd
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/18386/ http://umpir.ump.edu.my/id/eprint/18386/ http://umpir.ump.edu.my/id/eprint/18386/ http://umpir.ump.edu.my/id/eprint/18386/1/Heat%20Transfer%20Enhancement%20In%20Microchannel%20Heat%20Sink%20Using%20Hybrid%20Technique%20of%20Ribs%20and%20Secondary%20Channels.pdf http://umpir.ump.edu.my/id/eprint/18386/2/Heat%20Transfer%20Enhancement%20In%20Microchannel%20Heat%20Sink%20Using%20Hybrid%20Technique%20of%20Ribs%20and%20Secondary%20Channels%201.pdf
first_indexed	2023-09-18T22:26:01Z
last_indexed	2023-09-18T22:26:01Z
_version_	1777415971597713408

Heat Transfer Enhancement In Microchannel Heat Sink Using Hybrid Technique of Ribs and Secondary Channels

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