| Flow studies in three-dimensional aorto-right coronary bypass graft system. | |
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MedLine Citation:
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PMID: 16980282 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This paper presents the fluid dynamics of blood flow in a coronary bypass model of the aorto-right coronary bypass system. Three-dimensional computational fluid dynamic simulations are developed of the blood flow in coronary artery-bypass systems, using the computational fluid dynamics software (FLUENT 6.0.1). These blood flow simulations are performed within small intervals of the cardiac cycle, using input data consisting of physiological measurements of flow rates in the aorta, obtained from earlier studies. We have calculated the flow-field distributions of the velocity and the wall shear stress at four typical instants of the cardiac cycle, two during systole and two during the diastole phase. Plots of velocity vector and the wall shear stress are displayed in the aorto-graft-coronary arterial flow-field domain, providing an insight into the link between fluid dynamics and arterial diseases. The prime regions of disturbed flow patterns are at the entrance into the graft from the aorta and at the exit from the graft into the right coronary artery. Our objective is to obtain an understanding of how the coronary artery is perfused by the graft, and thereby into the factors affecting graft patency. |
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Authors:
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M Sankaranarayanan; L P Chua; D N Ghista; Y S Tan |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of medical engineering & technology Volume: 30 ISSN: 0309-1902 ISO Abbreviation: J Med Eng Technol Publication Date: 2006 Sep-Oct |
Date Detail:
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Created Date: 2006-09-18 Completed Date: 2007-01-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7702125 Medline TA: J Med Eng Technol Country: England |
Other Details:
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Languages: eng Pagination: 269-82 Citation Subset: IM |
Affiliation:
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School of Mechanical & Production Engineering, Nanyang Technological University, 639798, Singapore. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aorta
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physiology Computer Simulation Coronary Artery Bypass* Coronary Circulation* Coronary Vessels / physiology Hemorheology Humans Models, Cardiovascular* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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