Abstract

This research deals with nonlinear interactions between motion of a rigid body and fluid flow in a small diameter tube. It is supposed that such a problem becomes very important when the small diameter and complex fluid tube is designed in many systems of micro machine. The analytical model consists of incompressible viscous flow in a small diameter tube at low Reynolds number, and a sphere is released at center of the tube with static. So as to understand Non-linear Fluid-Solid Interaction, it is very important to measure the appearance of flow field and the behavior of a sphere.

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