Staff View: An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack

An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack

Forced air convection heat pipe cooling systems play an essential role in the thermal management of electronic and power electronic devices such as microprocessors and IGBT’s. With increasing heat dissipation from these devices, novel methods of improving the thermal performance of fin stacks attach...

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Main Authors:	Aris, M.S., McGlen, R.J., Owen, I
Format:	Citation Index Journal
Published:	2011
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utp.edu.my/1105/3/100401_Vortex_Generator_Paper.pdf http://eprints.utp.edu.my/1105/
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id	my.utp.eprints.1105
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spelling	my.utp.eprints.11052017-01-19T08:22:30Z An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack Aris, M.S. McGlen, R.J. Owen, I TJ Mechanical engineering and machinery Forced air convection heat pipe cooling systems play an essential role in the thermal management of electronic and power electronic devices such as microprocessors and IGBT’s. With increasing heat dissipation from these devices, novel methods of improving the thermal performance of fin stacks attached to the heat pipe condenser section are required. The current work investigates the use a wing type surface protrusions in the form of 3-D delta wing tabs adhered to the fin surface, thin wings punched out of the fin material and TiNi shape memory alloy delta wings which changed their angles of attack based on the fin surface temperature. The longitudinal vortices generated from the wing designs induce secondary mixing of the cooler free stream air entering the fin stack with the warmer fluid close to the fin surfaces. The change in angle of the attack of the active delta wings provide heat transfer enhancement while managing flow pressure losses across the fin stack. A heat transfer enhancement of 37% compared to a plain fin stack was obtained from the 3-D tabs in a staggered arrangement. The punched-out delta wings in the staggered and in-line arrangements provided enhancements of 30% and 26% respectively. Enhancements from the active delta wings were lower (16%) but these devices were able to manage an increase of approximately 19% in flow pressure losses between their de-activated and activated angles of attack. CFD analysis was also carried out to assess the local heat transfer enhancement effects. The CFD results corresponded well with previously published reports and were consistent with the experimental findings. 2011-08 Citation Index Journal PeerReviewed application/pdf http://eprints.utp.edu.my/1105/3/100401_Vortex_Generator_Paper.pdf Aris, M.S. and McGlen, R.J. and Owen, I (2011) An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack. [Citation Index Journal] (In Press) http://eprints.utp.edu.my/1105/
institution	Universiti Teknologi Petronas
building	UTP Resource Centre
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Petronas
content_source	UTP Institutional Repository
url_provider	http://eprints.utp.edu.my/
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Aris, M.S. McGlen, R.J. Owen, I An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack
description	Forced air convection heat pipe cooling systems play an essential role in the thermal management of electronic and power electronic devices such as microprocessors and IGBT’s. With increasing heat dissipation from these devices, novel methods of improving the thermal performance of fin stacks attached to the heat pipe condenser section are required. The current work investigates the use a wing type surface protrusions in the form of 3-D delta wing tabs adhered to the fin surface, thin wings punched out of the fin material and TiNi shape memory alloy delta wings which changed their angles of attack based on the fin surface temperature. The longitudinal vortices generated from the wing designs induce secondary mixing of the cooler free stream air entering the fin stack with the warmer fluid close to the fin surfaces. The change in angle of the attack of the active delta wings provide heat transfer enhancement while managing flow pressure losses across the fin stack. A heat transfer enhancement of 37% compared to a plain fin stack was obtained from the 3-D tabs in a staggered arrangement. The punched-out delta wings in the staggered and in-line arrangements provided enhancements of 30% and 26% respectively. Enhancements from the active delta wings were lower (16%) but these devices were able to manage an increase of approximately 19% in flow pressure losses between their de-activated and activated angles of attack. CFD analysis was also carried out to assess the local heat transfer enhancement effects. The CFD results corresponded well with previously published reports and were consistent with the experimental findings.
format	Citation Index Journal
author	Aris, M.S. McGlen, R.J. Owen, I
author_facet	Aris, M.S. McGlen, R.J. Owen, I
author_sort	Aris, M.S.
title	An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack
title_short	An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack
title_full	An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack
title_fullStr	An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack
title_full_unstemmed	An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack
title_sort	experimental investigation into the deployment of 3d, finned wing and shape memory alloy vortex generators in a forced air convection heat pipe fin stack
publishDate	2011
url	http://eprints.utp.edu.my/1105/3/100401_Vortex_Generator_Paper.pdf http://eprints.utp.edu.my/1105/
_version_	1738655109385027584
score	13.211869

An Experimental Investigation into the Deployment of 3D, Finned Wing and Shape Memory Alloy Vortex Generators in a Forced Air Convection Heat Pipe Fin Stack

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