Flow behaviour enhancement in micro-channels

narrowed blood vessels, eddies are formed and thus the blood flow become turbulence. Turbulence is the main contributor to the drag as it increases the loss of energy in the form of friction. Researchers started to have great interest in investigating the feasibility of the addition of a minute amou...

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Main Author:	Lam, Mian Mian
Format:	Undergraduates Project Papers
Language:	English English English English
Published:	2017
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/22587/ http://umpir.ump.edu.my/id/eprint/22587/ http://umpir.ump.edu.my/id/eprint/22587/1/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20Table%20of%20contents.pdf http://umpir.ump.edu.my/id/eprint/22587/2/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20Abstract.pdf http://umpir.ump.edu.my/id/eprint/22587/3/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20Chapter%201.pdf http://umpir.ump.edu.my/id/eprint/22587/4/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20References.pdf

id	ump-22587
recordtype	eprints
spelling	ump-225872018-12-11T08:51:38Z http://umpir.ump.edu.my/id/eprint/22587/ Flow behaviour enhancement in micro-channels Lam, Mian Mian TP Chemical technology narrowed blood vessels, eddies are formed and thus the blood flow become turbulence. Turbulence is the main contributor to the drag as it increases the loss of energy in the form of friction. Researchers started to have great interest in investigating the feasibility of the addition of a minute amount of drag reducing additives such as soluble polymers into the flow system that resulting in a large reduction of frictional drag in blood streams. In this work, the addition of soluble polymeric additives (Xanthan gum) role as a drag reducing agent (DRA) on the drag reduction (DR) performance using microfluidic devices was investigated. Seven different geometries of Y-shaped micro-channel were fabricated and eight different soluble polymeric additive’s concentrations (20ppm to 500ppm) were used used to investigate the concentration effect on drag reduction performance using pressure measurement. The efficiency of the soluble additive was tested using transported liquid (deionised water). The experimental procedure was divided into three parts. For the first part, micro-channel devices were fabricated using soft lithography method and moulded with polydimethylsiloxane (PDMS). The second part was the preparation of soluble polymeric additives solution. Xanthan gum as the drag reduction additive was selected in this study. The last part was to run the whole experiment by using pressure and vacuum pump controller and get the flow rate measurement. The maximum flow increment (%FI) of 34.90% was achieved by utilizing 500 ppm of Xanthan gum at the operating pressure of 100mbar in micro-channel with width of 500μm. The flow behavior of the drag reducing additive into the flow was also investigated using micro particle velocimetry (μ-PIV). Furthermore, our findings proved that the natural polymers warrant further investigation as a drag reduction polymer candidate for potential clinical treatment. It was concluded that the soluble additive are believed to have strong drag reduction properties although they are used in a minute amount. 2017-01 Undergraduates Project Papers NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/22587/1/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20Table%20of%20contents.pdf pdf en http://umpir.ump.edu.my/id/eprint/22587/2/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20Abstract.pdf pdf en http://umpir.ump.edu.my/id/eprint/22587/3/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20Chapter%201.pdf pdf en http://umpir.ump.edu.my/id/eprint/22587/4/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20References.pdf Lam, Mian Mian (2017) Flow behaviour enhancement in micro-channels. Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:102822&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English English English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Lam, Mian Mian Flow behaviour enhancement in micro-channels
description	narrowed blood vessels, eddies are formed and thus the blood flow become turbulence. Turbulence is the main contributor to the drag as it increases the loss of energy in the form of friction. Researchers started to have great interest in investigating the feasibility of the addition of a minute amount of drag reducing additives such as soluble polymers into the flow system that resulting in a large reduction of frictional drag in blood streams. In this work, the addition of soluble polymeric additives (Xanthan gum) role as a drag reducing agent (DRA) on the drag reduction (DR) performance using microfluidic devices was investigated. Seven different geometries of Y-shaped micro-channel were fabricated and eight different soluble polymeric additive’s concentrations (20ppm to 500ppm) were used used to investigate the concentration effect on drag reduction performance using pressure measurement. The efficiency of the soluble additive was tested using transported liquid (deionised water). The experimental procedure was divided into three parts. For the first part, micro-channel devices were fabricated using soft lithography method and moulded with polydimethylsiloxane (PDMS). The second part was the preparation of soluble polymeric additives solution. Xanthan gum as the drag reduction additive was selected in this study. The last part was to run the whole experiment by using pressure and vacuum pump controller and get the flow rate measurement. The maximum flow increment (%FI) of 34.90% was achieved by utilizing 500 ppm of Xanthan gum at the operating pressure of 100mbar in micro-channel with width of 500μm. The flow behavior of the drag reducing additive into the flow was also investigated using micro particle velocimetry (μ-PIV). Furthermore, our findings proved that the natural polymers warrant further investigation as a drag reduction polymer candidate for potential clinical treatment. It was concluded that the soluble additive are believed to have strong drag reduction properties although they are used in a minute amount.
format	Undergraduates Project Papers
author	Lam, Mian Mian
author_facet	Lam, Mian Mian
author_sort	Lam, Mian Mian
title	Flow behaviour enhancement in micro-channels
title_short	Flow behaviour enhancement in micro-channels
title_full	Flow behaviour enhancement in micro-channels
title_fullStr	Flow behaviour enhancement in micro-channels
title_full_unstemmed	Flow behaviour enhancement in micro-channels
title_sort	flow behaviour enhancement in micro-channels
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/22587/ http://umpir.ump.edu.my/id/eprint/22587/ http://umpir.ump.edu.my/id/eprint/22587/1/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20Table%20of%20contents.pdf http://umpir.ump.edu.my/id/eprint/22587/2/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20Abstract.pdf http://umpir.ump.edu.my/id/eprint/22587/3/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20Chapter%201.pdf http://umpir.ump.edu.my/id/eprint/22587/4/Flow%20behaviour%20enhancement%20in%20micro-channels%20-%20References.pdf
first_indexed	2023-09-18T22:33:42Z
last_indexed	2023-09-18T22:33:42Z
_version_	1777416455326793728

Flow behaviour enhancement in micro-channels

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