NDLI: Aspects Concerning the Simulation of a Mechanical Monoleaflet Heart Valve Closure

Content Provider	IEEE Xplore Digital Library
Author	Giurgea, C. Rafiroiu, D. Nascutiu, L.
Copyright Year	2006
Description	Author affiliation: Departments of Termotechnics & Electrotechnics, Cluj Napoca Tech. Univ. (Giurgea, C.)
Abstract	Cavitation is one of the factors related to the fluid mechanics of mechanical heart valve closure, which is supposed to be instrumental in valvular prosthetics complications. The basic mechanisms of MHV (mechanical heart valve) cavitation are still unresolved, requiring more detailed research on valve closing dynamics. Such research is very important for optimizing the build of MHVs, and, in the long run, for the design of a new generation of this kind of prostheses. This paper reviews the experimental and theoretical work on a monoleaflet valve closure, conducted by the authors in order to investigate the conditions and the mechanisms involved in cavitation occurrence. The paper treats aspects related both to the in vitro experiment which allowed the observation of cavitation in a OS (OmniScience) valve implanted in the mitral position of a cardiac simulator, and to the numerical simulation, based on an FSI (fluid structure interaction) model, of the closure motion of a generic-monoleaflet valve, to which the geometry of the aforementioned valve had been reduced. Results of the numerical simulation show the presence of areas of large negative pressures, indicating the potential for cavitation occurrence, at the instants and locations where cavitation bubbles were visualized in the in vitro experiment
Sponsorship	IEEE Comput. Soc. - Test Technol. Tech. Council Tech. Uni. of Cluj-Napoca IPA - R&D Inst. for Autom., Center for Tech. Transfer Cluj Uni. of Girona Romanian Minist. of Educ. and Res. Romanian Acad. for Tech. Sci. SRAIT- Romanian Soc. of Autom. and Tech. Informatics
Starting Page	420
Ending Page	425
File Size	1094387
Page Count	6
File Format	PDF
ISBN	142440360X
DOI	10.1109/AQTR.2006.254672
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-05-25
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solid modeling Visualization Mechanical heart valve Instruments Fluid dynamics In vitro Heart valves Design optimization Geometry Numerical simulation FSI Prosthetics cavitation
Content Type	Text
Resource Type	Article

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2-D Simulation Study Of The Flow Dynamics Of Heart Valve Prostheses

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Modelling Chorded Prosthetic Mitral Valves using the Immersed Boundary Method

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Aspects Concerning the Simulation of a Mechanical Monoleaflet Heart Valve Closure

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