Numerical investigation on effect of aortic root geometry on flow induced structural stresses developed in a bileaflet mechanical heart valve

Structural stresses developed in an artificial bileaflet mechanical heart valve (BMHV) due to pulsed blood flow may cause valve failure due to yielding. In this paper, von-Mises stresses are computed and compared for BMHV placed in two types of aortic root geometries that are aortic root with axisym...

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Main Authors: Abbas, S.S., Nasif, M.S., Said, M.A.M., Kadhim, S.K.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.19938 /
Published: Institute of Physics Publishing 2017
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85034230592&doi=10.1088%2f1742-6596%2f908%2f1%2f012039&partnerID=40&md5=a2b56e93c06c6dc3044546bd627ee992
http://eprints.utp.edu.my/19938/
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spelling utp-eprints.199382018-04-22T13:46:59Z Numerical investigation on effect of aortic root geometry on flow induced structural stresses developed in a bileaflet mechanical heart valve Abbas, S.S. Nasif, M.S. Said, M.A.M. Kadhim, S.K. Structural stresses developed in an artificial bileaflet mechanical heart valve (BMHV) due to pulsed blood flow may cause valve failure due to yielding. In this paper, von-Mises stresses are computed and compared for BMHV placed in two types of aortic root geometries that are aortic root with axisymmetric sinuses and with axisymmetric bulb, at different physiological blood flow rates. With BMHV placed in an aortic root with axisymmetric sinuses, the von-Mises stresses developed in the valve were found to be up to 47 higher than BMHV placed in aortic root with axisymmetric bulb under similar physiological conditions. High velocity vectors and therefore high von-Mises stresses have been observed for BMHV placed in aortic root with axisymmetric sinuses, that can lead to valve failure. © 2017 Published under licence by IOP Publishing Ltd. Institute of Physics Publishing 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85034230592&doi=10.1088%2f1742-6596%2f908%2f1%2f012039&partnerID=40&md5=a2b56e93c06c6dc3044546bd627ee992 Abbas, S.S. and Nasif, M.S. and Said, M.A.M. and Kadhim, S.K. (2017) Numerical investigation on effect of aortic root geometry on flow induced structural stresses developed in a bileaflet mechanical heart valve. Journal of Physics: Conference Series, 908 (1). http://eprints.utp.edu.my/19938/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Structural stresses developed in an artificial bileaflet mechanical heart valve (BMHV) due to pulsed blood flow may cause valve failure due to yielding. In this paper, von-Mises stresses are computed and compared for BMHV placed in two types of aortic root geometries that are aortic root with axisymmetric sinuses and with axisymmetric bulb, at different physiological blood flow rates. With BMHV placed in an aortic root with axisymmetric sinuses, the von-Mises stresses developed in the valve were found to be up to 47 higher than BMHV placed in aortic root with axisymmetric bulb under similar physiological conditions. High velocity vectors and therefore high von-Mises stresses have been observed for BMHV placed in aortic root with axisymmetric sinuses, that can lead to valve failure. © 2017 Published under licence by IOP Publishing Ltd.
format Article
author Abbas, S.S.
Nasif, M.S.
Said, M.A.M.
Kadhim, S.K.
spellingShingle Abbas, S.S.
Nasif, M.S.
Said, M.A.M.
Kadhim, S.K.
Numerical investigation on effect of aortic root geometry on flow induced structural stresses developed in a bileaflet mechanical heart valve
author_sort Abbas, S.S.
title Numerical investigation on effect of aortic root geometry on flow induced structural stresses developed in a bileaflet mechanical heart valve
title_short Numerical investigation on effect of aortic root geometry on flow induced structural stresses developed in a bileaflet mechanical heart valve
title_full Numerical investigation on effect of aortic root geometry on flow induced structural stresses developed in a bileaflet mechanical heart valve
title_fullStr Numerical investigation on effect of aortic root geometry on flow induced structural stresses developed in a bileaflet mechanical heart valve
title_full_unstemmed Numerical investigation on effect of aortic root geometry on flow induced structural stresses developed in a bileaflet mechanical heart valve
title_sort numerical investigation on effect of aortic root geometry on flow induced structural stresses developed in a bileaflet mechanical heart valve
publisher Institute of Physics Publishing
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85034230592&doi=10.1088%2f1742-6596%2f908%2f1%2f012039&partnerID=40&md5=a2b56e93c06c6dc3044546bd627ee992
http://eprints.utp.edu.my/19938/
_version_ 1741196288881328128
score 11.62408

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