A partitioned strongly coupled fluid-structure interaction method to model heart valve dynamics

被引：26

作者：

Vierendeels, J. ^{[1
]}

Dumont, K. ^{[2
]}

Verdonck, P. R. ^{[2
]}

机构：

[1] Univ Ghent, Dept Flow Heat & Combust, B-9000 Ghent, Belgium

[2] Univ Ghent, Inst Biomed Technol, IBiTech, B-9000 Ghent, Belgium

来源：

JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS | 2008年 / 215卷 / 02期

关键词：

fluid-structure interaction; cardiovascular; heart valve; implicit; strongly coupled; reduced order model;

D O I：

10.1016/j.cam.2006.04.067

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

A new method for the calculation of fluid-structure interaction (FSI) of highly flexible bodies is presented. This innovative algorithm demonstrates the strong coupling of a commercial computational fluid dynamics code with an in-house coded structural solver. The strong response of the pressure distribution to the displacement can be approximated by a reduced order model for the fluid solver. The Jacobian of this reduced order model is then used in the structural solver to obtain a stable and full implicit iteration scheme. The method is demonstrated on a 2D model of a flexible aortic valve during the cardiac cycle. Furthermore, the model is able to calculate shear stresses on the leaflet. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：602 / 609

页数：8

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