Numerical analysis of a collapsible tube conveying fluid; two-dimensional channel model.

A numerical simulation of unsteady flow in a two-dimensional collapsible channel

The collapse of a compressed elastic tube conveying a flow occurs in several physiological applications and has become a problem of considerable interest. Laboratory experiments on a finite length of collapsible tube reveal a rich variety of self-excited oscillations, indicating that the system is a complex, nonlinear dynamical system. Following our previous study on steady flow in a two-dimens...

A fluid–beam model for flow in a collapsible channel

This paper proposes a fluid–beam model to overcome the shortcomings of the previous fluid–membrane models on flow in collapsible channels of Luo and Pedley. The new model employs a plane strained elastic beam with large deflection and incrementally linear extension. This model gives a more realistic and general description of the problem and reduces to several simpler models including the fluid...

Fluid Flow in Collapsible Elastic Tubes: A Three-Dimensional Numerical Model

A three-dimensional computer model has been developed to simulate fluid flow through a collapsible tube. The model is based on the immersed boundary method, which is designed to handle a flexible elastic boundary immersed in fluid. This internal boundary is both affected by and has an effect on the motion of the fluid. The setup for collapsible tube simulation involves a fiber-wound elastic tub...

Numerical Investigation of the Structure of Density Currents in a two Dimensional Channel

Numerical Investigation of the Structure of Density Currents in a two Dimensional Channel