The Effects of Vortex Generator Types on Heat Transfer and Flow Structure in a Rectangular Duct Flows

In this numerical study a detailed evaluation of the heat transfer characteristics and flow structure in a laminar and turbulent flow through a rectangular channel containing built-in of different type vortex generator has been a accomplished in a range of Reynolds number between 500 and 100,00...

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Autores principales:	Waheed S. Mohammed, Sabah Tarik Ahmed, Laith J. H.
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2008
Materias:	Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/d9fadc0693a24c788528d181f488f933
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spelling	oai:doaj.org-article:d9fadc0693a24c788528d181f488f9332021-12-02T04:47:47ZThe Effects of Vortex Generator Types on Heat Transfer and Flow Structure in a Rectangular Duct Flows1818-11712312-0789https://doaj.org/article/d9fadc0693a24c788528d181f488f9332008-03-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/529https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 In this numerical study a detailed evaluation of the heat transfer characteristics and flow structure in a laminar and turbulent flow through a rectangular channel containing built-in of different type vortex generator has been a accomplished in a range of Reynolds number between 500 and 100,000.A modified version of ESCEAT code has been used to solve Navier-Stokes and energy equations. The purpose of this paper is to present numerical comparisons in terms of temperature, Nusselt number and flow patterns on several configurations of longitudinal vortex generator including new five cases. The structures of heat and flow were studied, using iso-contours of velocity components, vortices, temperature and Nusselt number. This study shows that the predicted structures of fluid flow, temperature fields and Nusselt number variation are strongly affected by the presence of the turbulators. Staggered arrangement gains high Nusselt number, also the lower and upper arrangements have higher Nusselt number than plane duct. High Reynolds number (higher air inlet velocity) will enhance the Nusselt number. Increase in ribs height will enhance the heat transfer as it works as surface area and turbulator at the same time. Waheed S. MohammedSabah Tarik AhmedLaith J. H.Al-Khwarizmi College of Engineering – University of BaghdadarticleChemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 4, Iss 1 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Waheed S. Mohammed Sabah Tarik Ahmed Laith J. H. The Effects of Vortex Generator Types on Heat Transfer and Flow Structure in a Rectangular Duct Flows
description	In this numerical study a detailed evaluation of the heat transfer characteristics and flow structure in a laminar and turbulent flow through a rectangular channel containing built-in of different type vortex generator has been a accomplished in a range of Reynolds number between 500 and 100,000.A modified version of ESCEAT code has been used to solve Navier-Stokes and energy equations. The purpose of this paper is to present numerical comparisons in terms of temperature, Nusselt number and flow patterns on several configurations of longitudinal vortex generator including new five cases. The structures of heat and flow were studied, using iso-contours of velocity components, vortices, temperature and Nusselt number. This study shows that the predicted structures of fluid flow, temperature fields and Nusselt number variation are strongly affected by the presence of the turbulators. Staggered arrangement gains high Nusselt number, also the lower and upper arrangements have higher Nusselt number than plane duct. High Reynolds number (higher air inlet velocity) will enhance the Nusselt number. Increase in ribs height will enhance the heat transfer as it works as surface area and turbulator at the same time.
format	article
author	Waheed S. Mohammed Sabah Tarik Ahmed Laith J. H.
author_facet	Waheed S. Mohammed Sabah Tarik Ahmed Laith J. H.
author_sort	Waheed S. Mohammed
title	The Effects of Vortex Generator Types on Heat Transfer and Flow Structure in a Rectangular Duct Flows
title_short	The Effects of Vortex Generator Types on Heat Transfer and Flow Structure in a Rectangular Duct Flows
title_full	The Effects of Vortex Generator Types on Heat Transfer and Flow Structure in a Rectangular Duct Flows
title_fullStr	The Effects of Vortex Generator Types on Heat Transfer and Flow Structure in a Rectangular Duct Flows
title_full_unstemmed	The Effects of Vortex Generator Types on Heat Transfer and Flow Structure in a Rectangular Duct Flows
title_sort	effects of vortex generator types on heat transfer and flow structure in a rectangular duct flows
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2008
url	https://doaj.org/article/d9fadc0693a24c788528d181f488f933
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The Effects of Vortex Generator Types on Heat Transfer and Flow Structure in a Rectangular Duct Flows

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