CFD study on aortic cannula (flow characteristics)

During cardio-pulmonary bypass (CPB) machine operation, aortic cannula is placed in the right side of the heart. One of the complications in current aortic cannula usage is the sandblasting effect of cannula jet. This study aims to reduce the exit force and jet velocity of blood flow, thereby reduci...

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Main Author:	Sulaiman, Nabila
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/53587/1/NabilaSulaimanMFKM2015.pdf
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id	my-utm-ep.53587
record_format	uketd_dc
spelling	my-utm-ep.535872020-07-22T02:57:13Z CFD study on aortic cannula (flow characteristics) 2015-06 Sulaiman, Nabila TJ Mechanical engineering and machinery During cardio-pulmonary bypass (CPB) machine operation, aortic cannula is placed in the right side of the heart. One of the complications in current aortic cannula usage is the sandblasting effect of cannula jet. This study aims to reduce the exit force and jet velocity of blood flow, thereby reducing the sandblasting effect. Five new aortic cannula designs are investigated using numerical techniques. All cannula have straight and grooves geometries respectively which produce different swirl flow characteristics. Pressure drop, outflow velocity, helical density and wall shear stresses are the components analysed for all case studies. It is shown that the spiral flows induced by straight cannula body employs the lowest pressure drop, lowest outflow velocity, farthest distance of helical flow, and lowest wall shear stress distribution. It is also shown that the flow from cannula with two revolutions and four groove displays the highest pressure drop, low outflow velocity, shortest distance of helical flow and the highest wall shear stress distributions. 2015-06 Thesis http://eprints.utm.my/id/eprint/53587/ http://eprints.utm.my/id/eprint/53587/1/NabilaSulaimanMFKM2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85514 masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Sulaiman, Nabila CFD study on aortic cannula (flow characteristics)
description	During cardio-pulmonary bypass (CPB) machine operation, aortic cannula is placed in the right side of the heart. One of the complications in current aortic cannula usage is the sandblasting effect of cannula jet. This study aims to reduce the exit force and jet velocity of blood flow, thereby reducing the sandblasting effect. Five new aortic cannula designs are investigated using numerical techniques. All cannula have straight and grooves geometries respectively which produce different swirl flow characteristics. Pressure drop, outflow velocity, helical density and wall shear stresses are the components analysed for all case studies. It is shown that the spiral flows induced by straight cannula body employs the lowest pressure drop, lowest outflow velocity, farthest distance of helical flow, and lowest wall shear stress distribution. It is also shown that the flow from cannula with two revolutions and four groove displays the highest pressure drop, low outflow velocity, shortest distance of helical flow and the highest wall shear stress distributions.
format	Thesis
qualification_level	Master's degree
author	Sulaiman, Nabila
author_facet	Sulaiman, Nabila
author_sort	Sulaiman, Nabila
title	CFD study on aortic cannula (flow characteristics)
title_short	CFD study on aortic cannula (flow characteristics)
title_full	CFD study on aortic cannula (flow characteristics)
title_fullStr	CFD study on aortic cannula (flow characteristics)
title_full_unstemmed	CFD study on aortic cannula (flow characteristics)
title_sort	cfd study on aortic cannula (flow characteristics)
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/53587/1/NabilaSulaimanMFKM2015.pdf
_version_	1747817588395606016

CFD study on aortic cannula (flow characteristics)

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