Īkins CW, Travis B, Yoganathan AP (2008) Energy loss for evaluating heart valve performance. Accordingly, good structural kinematics and deformations are captured for the entire cardiac cycle.Ībbas SS, Nasif MS, Al-Waked R (2022) State-of-the-art numerical fluid–structure interaction methods for aortic and mitral heart valves simulations: a review.

The full closure of the contacting leaflets in BAV is also demonstrated. In particular, the diastolic fluctuating velocity phenomenon near the leaflets is explicitly predicted, providing vital information on the flow transient nature. The importance of LBM-FE FSI also emerges in its ability to resolve local hemodynamic and structural behaviors. The multi-scale heterogeneous CFN tissue structural model enhances our understanding of the mechanical roles of the CFN and the elastin matrix behaviors. We found that LBM-FE FSI approach can produce good predictions for the flow and structural behaviors of TAV and BAV and correlates well with those reported in the literature. Different simulations have been examined, and structural stresses and resulting hemodynamics are analyzed. The CFN multi-scale tissue model is inspired by monitoring the distribution of the collagen in 15 porcine leaflets. In addition, a multi-scale structural approach that has been employed explicitly recognizes the heterogeneous leaflet tissues and differentiates between the collagen fiber network (CFN) embedded within the elastin matrix of the leaflets.

The suitability of the LBM-FE hemodynamic FSI is examined in modeling healthy tricuspid and bicuspid aortic valves (TAV and BAV), respectively. Toward that goal, two commercial software packages are integrated using the lattice Boltzmann (LBM) and finite element (FE) methods. This study proposes a new fluid–structure interaction (FSI) co-modeling framework for the hemodynamic-structural analysis of compliant aortic valves. The lattice Boltzmann method (LBM) has been increasingly used as a stand-alone CFD solver in various biomechanical applications.

Abaqus fsi heart valve