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Computer Simulations of Pulsatile Blood Flow in Fusiform Models of Abdominal Aortic Aneurysms

Flow dynamics have been investigated in model aneurysms under physiologically realistic pulsatile flow condition via computational modeling techniques. The computer simulations are based on finite element method. Vortex pattern emergence and evolution were evaluated. Throughout the bulge in all mode...

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Main Authors: Vijayajothi , Paramasivam, Kanesan , Muthusamy, M. Rafiq, Abdul Kadir
Format: Article
Published: ISSR Journals 2012
Subjects:
QC Physics
Online Access:http://library.oum.edu.my/repository/706/1/computer_simulation_kanesan.pdf
http://library.oum.edu.my/repository/706/
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spelling my.oum.7062013-05-15T02:15:28Z Computer Simulations of Pulsatile Blood Flow in Fusiform Models of Abdominal Aortic Aneurysms Vijayajothi , Paramasivam Kanesan , Muthusamy M. Rafiq, Abdul Kadir QC Physics Flow dynamics have been investigated in model aneurysms under physiologically realistic pulsatile flow condition via computational modeling techniques. The computer simulations are based on finite element method. Vortex pattern emergence and evolution were evaluated. Throughout the bulge in all models regardless of size, the systolic flow was found to be forward-directed. Vortices were initially evident in the bulge during deceleration from peak systole and further expanded during the retrograde flow phase. Flow in larger models become increasingly unstable compared to smaller models. It was also noted that these unstable flow fields were much significant towards the distal half of the bulge models. This increased intensity of turbulent flow fields in larger models may contribute significantly to wall shear stress magnitude and subsequently contributing to higher rupture risks. (Abstract by authors) ISSR Journals 2012 Article PeerReviewed text http://library.oum.edu.my/repository/706/1/computer_simulation_kanesan.pdf Vijayajothi , Paramasivam and Kanesan , Muthusamy and M. Rafiq, Abdul Kadir (2012) Computer Simulations of Pulsatile Blood Flow in Fusiform Models of Abdominal Aortic Aneurysms. CFD Letters, 4 (2). pp. 47-53. ISSN 2180-1363 http://library.oum.edu.my/repository/706/
institution Open University Malaysia
building OUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Open University Malaysia
content_source OUM Knowledge Repository
url_provider http://library.oum.edu.my/repository/
topic QC Physics
spellingShingle QC Physics
Vijayajothi , Paramasivam
Kanesan , Muthusamy
M. Rafiq, Abdul Kadir
Computer Simulations of Pulsatile Blood Flow in Fusiform Models of Abdominal Aortic Aneurysms
description Flow dynamics have been investigated in model aneurysms under physiologically realistic pulsatile flow condition via computational modeling techniques. The computer simulations are based on finite element method. Vortex pattern emergence and evolution were evaluated. Throughout the bulge in all models regardless of size, the systolic flow was found to be forward-directed. Vortices were initially evident in the bulge during deceleration from peak systole and further expanded during the retrograde flow phase. Flow in larger models become increasingly unstable compared to smaller models. It was also noted that these unstable flow fields were much significant towards the distal half of the bulge models. This increased intensity of turbulent flow fields in larger models may contribute significantly to wall shear stress magnitude and subsequently contributing to higher rupture risks. (Abstract by authors)
format Article
author Vijayajothi , Paramasivam
Kanesan , Muthusamy
M. Rafiq, Abdul Kadir
author_facet Vijayajothi , Paramasivam
Kanesan , Muthusamy
M. Rafiq, Abdul Kadir
author_sort Vijayajothi , Paramasivam
title Computer Simulations of Pulsatile Blood Flow in Fusiform Models of Abdominal Aortic Aneurysms
title_short Computer Simulations of Pulsatile Blood Flow in Fusiform Models of Abdominal Aortic Aneurysms
title_full Computer Simulations of Pulsatile Blood Flow in Fusiform Models of Abdominal Aortic Aneurysms
title_fullStr Computer Simulations of Pulsatile Blood Flow in Fusiform Models of Abdominal Aortic Aneurysms
title_full_unstemmed Computer Simulations of Pulsatile Blood Flow in Fusiform Models of Abdominal Aortic Aneurysms
title_sort computer simulations of pulsatile blood flow in fusiform models of abdominal aortic aneurysms
publisher ISSR Journals
publishDate 2012
url http://library.oum.edu.my/repository/706/1/computer_simulation_kanesan.pdf
http://library.oum.edu.my/repository/706/
_version_ 1644309050319437824
score 13.244369

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