Dynamic Simulation and Hemolysis Evaluation of the Regurgitant Flow over a Tilting-Disc Mechanical Heart Valve in Pulsatile Flow

Hsu, Uzu-Kuei and Lu, Pong-Jeu (2013) Dynamic Simulation and Hemolysis Evaluation of the Regurgitant Flow over a Tilting-Disc Mechanical Heart Valve in Pulsatile Flow. World Journal of Mechanics, 03 (03). pp. 160-168. ISSN 2160-049X

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Abstract

Regurgitation in the heart diastolic phase represents a critical flow condition associated with many heart valve design considerations. The finite volume method, the Low-Reynolds-Number k-ω turbulent model and sliding mesh model are employed to solve and compare the complex flow field and the torque in each case. The end results expected from a cardiovascular CFD analysis are not limited only to the flowfield investigations. More importantly, it needs an evaluation criterion to judge if the design is acceptable as considered from a broader blood cell damage or activation perspective. In this study, blood cell damage index developed based on stress-time empirical rule and Lagrangian particle tracking is introduced to assess the viscous and turbulence-induced stresses effect to the blood cells.

Item Type: Article
Subjects: Science Global Plos > Engineering
Depositing User: Unnamed user with email support@science.globalplos.com
Date Deposited: 10 Feb 2023 12:21
Last Modified: 27 Sep 2023 06:59
URI: http://ebooks.manu2sent.com/id/eprint/111

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