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An approach to the simulation of fluid–structure interaction in the aortic valve

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Title: An approach to the simulation of fluid–structure interaction in the aortic valve
Authors: Carmody, C.J., Burriesci, G., Howard, I.C.1, Patterson, E.A. eann@egr.msu.edu
Source: Journal of Biomechanics. Jan2006, Vol. 39 Issue 1, p158-169. 12p.
Subjects: Finite element method, Aortic valve, Hemodynamics, Blood flow
Abstract: Abstract: A pair of finite element models has been employed to study the interaction of blood flow with the operation of the aortic valve. A three-dimensional model of the left ventricle with applied wall displacements has been used to generate data for the spatially and time-varying blood velocity profile across the aortic aperture. These data have been used as the inlet loading conditions in a three-dimensional model of the aortic valve and its surrounding structures. Both models involve fluid–structure interaction and simulate the cardiac cycle as a dynamic event. Confidence in the models was obtained by comparison with data obtained in a pulse duplicator. The results show a circulatory flow being generated in the ventricle which produces a substantially axial flow through the aortic aperture. The aortic valve behaves in an essentially symmetric way under the action of this flow, so that the pressure difference across the leaflets is approximately uniform. This work supports the use of spatially uniform but temporally variable pressure distributions across the leaflets in dry or structural models of aortic valves. The study is a major advance through its use of truly three-dimensional geometry, spatially non-uniform loading conditions for the valve leaflets and the successful modelling of progressive contact of the leaflets in a fluid environment. [Copyright &y& Elsevier]
Copyright of Journal of Biomechanics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 19035166
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
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  Data: An approach to the simulation of fluid–structure interaction in the aortic valve
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  Data: <searchLink fieldCode="AR" term="%22Carmody%2C+C%2EJ%2E%22">Carmody, C.J.</searchLink><br /><searchLink fieldCode="AR" term="%22Burriesci%2C+G%2E%22">Burriesci, G.</searchLink><br /><searchLink fieldCode="AR" term="%22Howard%2C+I%2EC%2E%22">Howard, I.C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Patterson%2C+E%2EA%2E%22">Patterson, E.A.</searchLink><i> eann@egr.msu.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Biomechanics%22">Journal of Biomechanics</searchLink>. Jan2006, Vol. 39 Issue 1, p158-169. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Aortic+valve%22">Aortic valve</searchLink><br /><searchLink fieldCode="DE" term="%22Hemodynamics%22">Hemodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Blood+flow%22">Blood flow</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: A pair of finite element models has been employed to study the interaction of blood flow with the operation of the aortic valve. A three-dimensional model of the left ventricle with applied wall displacements has been used to generate data for the spatially and time-varying blood velocity profile across the aortic aperture. These data have been used as the inlet loading conditions in a three-dimensional model of the aortic valve and its surrounding structures. Both models involve fluid–structure interaction and simulate the cardiac cycle as a dynamic event. Confidence in the models was obtained by comparison with data obtained in a pulse duplicator. The results show a circulatory flow being generated in the ventricle which produces a substantially axial flow through the aortic aperture. The aortic valve behaves in an essentially symmetric way under the action of this flow, so that the pressure difference across the leaflets is approximately uniform. This work supports the use of spatially uniform but temporally variable pressure distributions across the leaflets in dry or structural models of aortic valves. The study is a major advance through its use of truly three-dimensional geometry, spatially non-uniform loading conditions for the valve leaflets and the successful modelling of progressive contact of the leaflets in a fluid environment. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Biomechanics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=19035166
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        Value: 10.1016/j.jbiomech.2004.10.038
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 158
    Subjects:
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Aortic valve
        Type: general
      – SubjectFull: Hemodynamics
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      – SubjectFull: Blood flow
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              Text: Jan2006
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              Y: 2006
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