Numerical simulation of dynamic tube law of collapsible tube

Abstract

In order to study characteristics of flow through a collapsible tube, and its self-excited oscillation, etc., it is important to elucidate a dynamic deformation characteristics of the collapsible tube as a model blood vessel when it is subjected to transmural pressure. Hence, we have studied a dynamic tube law by numerical simulation. In this paper, we have made a calculation about the deformation of a tube section by using a dynamic explicit finite element method. To evaluate the validity of our calculation, we have calculated the static tube deformation and have compared our data with conventional valid one. Also, we have investigated the tube deformation when the tube is subjected to impulsive pressure. As a result, it is shown that their agreements with the conventional results are good.