Measurements of steady flow through a bileaflet mechanical heart valve using stereoscopic PIV.
Computational modeling of bileaflet mechanical heart valve (BiMHV) flow requires experimentally validated datasets and improved knowledge of BiMHV fluid mechanics. In this study, flow was studied downstream of a model BiMHV in an axisymmetric aortic sinus using stereoscopic particle image velocimetr...
| Publicado en: | Medical & Biological Engineering & Computing Vol. 49; no. 3; pp. 325 - 336 |
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| Autores principales: | , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Mar2011
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104570417&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104570417 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01400118 PO0 jtl: Medical & Biological Engineering & Computing issn: 01400118 maglogo: N pubinfo: dt: Mar2011 vid: 49 iid: 3 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104570417 NLM21080093 2010967518 10.1007/s11517-010-0705-z NLM21080093 104570417 ppf: 325 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Measurements of steady flow through a bileaflet mechanical heart valve using stereoscopic PIV. aug: au: Hutchison C Sullivan P Ethier CR Hutchison, Chris Sullivan, Pierre Ethier, C Ross affil: Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada sug: subj: Heart Valve Prosthesis Algorithms Blood Flow Velocity Physiology Coronary Circulation Physiology Models, Biological Prosthesis Design ab: Computational modeling of bileaflet mechanical heart valve (BiMHV) flow requires experimentally validated datasets and improved knowledge of BiMHV fluid mechanics. In this study, flow was studied downstream of a model BiMHV in an axisymmetric aortic sinus using stereoscopic particle image velocimetry. The inlet flow was steady and the Reynolds number based on the aortic diameter was 7600. Results showed the out-of-plane velocity was of similar magnitude as the transverse velocity. Although additional studies are needed for confirmation, analysis of the out-of-plane velocity showed the possible presence of a four-cell streamwise vortex structure in the mean velocity field. Spatial data for all six Reynolds stress components were obtained. Reynolds normal stress profiles revealed similarities between the central jet and free jets. These findings are important to BiMHV flow modeling, though clinical relevance is limited due to the idealized conditions chosen. To this end, the dataset is publicly available for CFD validation purposes. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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