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Augmented resistive immersed surfaces valve model for the simulation of cardiac hemodynamics with isovolumetric phases
Author(s) -
This Alexandre,
BoilevinKayl Ludovic,
Fernández Miguel A.,
Gerbeau JeanFrédéric
Publication year - 2020
Publication title -
international journal for numerical methods in biomedical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.741
H-Index - 63
eISSN - 2040-7947
pISSN - 2040-7939
DOI - 10.1002/cnm.3223
Subject(s) - isovolumetric contraction , resistive touchscreen , hemodynamics , mechanics , materials science , simulation , computer science , biomedical engineering , cardiology , blood pressure , physics , engineering , medicine , diastole , computer vision
In order to reduce the complexity of heart hemodynamics simulations, uncoupling approaches are often considered for the modeling of the immersed valves as an alternative to complex fluid‐structure interaction (FSI) models. A possible shortcoming of these simplified approaches is the difficulty to correctly capture the pressure dynamics during the isovolumetric phases. In this work, we propose an enhanced resistive immersed surfaces (RIS) model of cardiac valves, which overcomes this issue. The benefits of the model are investigated and tested in blood flow simulations of the left heart where the physiological behavior of the intracavity pressure during the isovolumetric phases is recovered without using fully coupled fluid‐structure models and without important alteration of the associated velocity field.