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Numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids

Laminar mixed convective buoyancy assisting flow through a two-dimensional vertical duct with a backward-facing step using nanofluids as a medium is numerically simulated using finite volume technique. Different types of nanoparticles with 5% volume fraction are used. The wall downstream of the step...

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Main Authors:	Al-Aswadi A.A., Mohammed H.A., Shuaib N.H.
Other Authors:	36241331700
Format:	Conference paper
Published:	2023
Subjects:	Mechanical engineering Nanofluidics Reynolds number Backward facing step Constant temperature Finite volume technique Mixed convective flow Numerical investigations Re-circulation flow Recirculation regions Uniform wall temperatures Ducts
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id	my.uniten.dspace-30566
record_format	dspace
spelling	my.uniten.dspace-305662023-12-29T15:49:33Z Numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids Al-Aswadi A.A. Mohammed H.A. Shuaib N.H. 36241331700 15837504600 13907934500 Mechanical engineering Nanofluidics Reynolds number Backward facing step Constant temperature Finite volume technique Mixed convective flow Numerical investigations Re-circulation flow Recirculation regions Uniform wall temperatures Ducts Laminar mixed convective buoyancy assisting flow through a two-dimensional vertical duct with a backward-facing step using nanofluids as a medium is numerically simulated using finite volume technique. Different types of nanoparticles with 5% volume fraction are used. The wall downstream of the step was maintained at a uniform wall temperature, while the straight wall that forms the other side of the duct was maintained at constant temperature equivalent to the inlet fluid temperature. The wall upstream of the step and the backward-facing step were considered as adiabatic surfaces. The duct has a step height of 4.9 mm and an expansion ratio of 1.942, while the total length in the downstream of the step is 0.5 m. The Reynolds number was in the range of 0 ? Re ? 100. The downstream wall was fixed to be at uniform wall temperature of 20 �C higher than the inlet flow temperature. A recirculation region was developed straight behind the backward facing step which was appeared between the edge of the step and few millimeters before the corner which connect the step and the downstream wall. In the few millimeters gap a U-turn flow was developed opposite to the recirculation flow which mixed with the unrecirculated flow and travels along the channel. It is inferred that diamond nanofluid has the highest velocity in the vicinity to the heated wall. Copyright � 2010 by ASME. Final 2023-12-29T07:49:33Z 2023-12-29T07:49:33Z 2010 Conference paper 10.1115/IMECE2010-38152 2-s2.0-84881440921 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881440921&doi=10.1115%2fIMECE2010-38152&partnerID=40&md5=59a5c447e6510189722c8b0d5fed04b9 https://irepository.uniten.edu.my/handle/123456789/30566 7 PARTS A AND B 1453 1463 Scopus
institution	Universiti Tenaga Nasional
building	UNITEN Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Tenaga Nasional
content_source	UNITEN Institutional Repository
url_provider	http://dspace.uniten.edu.my/
topic	Mechanical engineering Nanofluidics Reynolds number Backward facing step Constant temperature Finite volume technique Mixed convective flow Numerical investigations Re-circulation flow Recirculation regions Uniform wall temperatures Ducts
spellingShingle	Mechanical engineering Nanofluidics Reynolds number Backward facing step Constant temperature Finite volume technique Mixed convective flow Numerical investigations Re-circulation flow Recirculation regions Uniform wall temperatures Ducts Al-Aswadi A.A. Mohammed H.A. Shuaib N.H. Numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids
description	Laminar mixed convective buoyancy assisting flow through a two-dimensional vertical duct with a backward-facing step using nanofluids as a medium is numerically simulated using finite volume technique. Different types of nanoparticles with 5% volume fraction are used. The wall downstream of the step was maintained at a uniform wall temperature, while the straight wall that forms the other side of the duct was maintained at constant temperature equivalent to the inlet fluid temperature. The wall upstream of the step and the backward-facing step were considered as adiabatic surfaces. The duct has a step height of 4.9 mm and an expansion ratio of 1.942, while the total length in the downstream of the step is 0.5 m. The Reynolds number was in the range of 0 ? Re ? 100. The downstream wall was fixed to be at uniform wall temperature of 20 �C higher than the inlet flow temperature. A recirculation region was developed straight behind the backward facing step which was appeared between the edge of the step and few millimeters before the corner which connect the step and the downstream wall. In the few millimeters gap a U-turn flow was developed opposite to the recirculation flow which mixed with the unrecirculated flow and travels along the channel. It is inferred that diamond nanofluid has the highest velocity in the vicinity to the heated wall. Copyright � 2010 by ASME.
author2	36241331700
author_facet	36241331700 Al-Aswadi A.A. Mohammed H.A. Shuaib N.H.
format	Conference paper
author	Al-Aswadi A.A. Mohammed H.A. Shuaib N.H.
author_sort	Al-Aswadi A.A.
title	Numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids
title_short	Numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids
title_full	Numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids
title_fullStr	Numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids
title_full_unstemmed	Numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids
title_sort	numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids
publishDate	2023
_version_	1806424110268416000
score	13.222552

Numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids

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