Annerel S, Claessens T, Degroote J, Segers P, Vierendeels J
Ghent University, Department of Flow, Heat and Combustion Mechanics, Sint-Pietersnieuwstraat 41, B-9000 Ghent, Belgium.
Ghent University, Department of Industrial Technology and Construction, Valentin Vaerwyckweg 1, B-9000 Ghent, Belgium.
Med Eng Phys. 2014 Aug;36(8):1014-23. doi: 10.1016/j.medengphy.2014.05.004. Epub 2014 Jun 10.
In this paper, a validation of a recently developed fluid-structure interaction (FSI) coupling algorithm to simulate numerically the dynamics of an aortic bileaflet mechanical heart valve (BMHV) is performed. This validation is done by comparing the numerical simulation results with in vitro experiments. For the in vitro experiments, the leaflet kinematics and flow fields are obtained via the particle image velocimetry (PIV) technique. Subsequently, the same case is numerically simulated by the coupling algorithm and the resulting leaflet kinematics and flow fields are obtained. Finally, the results are compared, revealing great similarity in leaflet motion and flow fields between the numerical simulation and the experimental test. Therefore, it is concluded that the developed algorithm is able to capture very accurately all the major leaflet kinematics and dynamics and can be used to study and optimize the design of BMHVs.
本文对最近开发的一种流固耦合（FSI）算法进行了验证，以数值模拟主动脉双叶机械心脏瓣膜（BMHV）的动力学。通过将数值模拟结果与体外实验进行比较来完成这种验证。对于体外实验，通过粒子图像测速（PIV）技术获得瓣叶运动学和流场。随后，用该耦合算法对相同情况进行数值模拟，并获得由此产生的瓣叶运动学和流场。最后，对结果进行比较，结果表明数值模拟和实验测试在瓣叶运动和流场方面具有很大的相似性。因此，可以得出结论，所开发的算法能够非常准确地捕捉所有主要的瓣叶运动学和动力学，可用于研究和优化BMHV的设计。
