Flow-induced oscillation in flexible tubes: experimental and numerical investigation of mechanism and onset

我们试图了解在非常易变形的结构上流动时产生不稳定性的原因。这将帮助我们专门设计高度灵活的结构，以避免可能具有破坏性的流致振荡的危险(心脏手术、风帆、降落伞)，或在其他情况下利用它们作为一种创新的方式，不涉及滑动部件机制来产生振动、流动脉动、声音或运动(如游泳池清洁器)。使用高度柔性的管子设计的信心将允许在制造用于输送流体的产品时最大限度地减少资源消耗，并将允许设计使用限流特性，从而使这种管子可以控制流量。

We seek to understand when instability arises in flow over very deformable structures. This will help us to design highly flexible structures specifically either to avoid the danger of flow-induced oscillations, which may be damaging (cardiac surgery, sails, parachutes), or in other circumstances to take advantage of them as an innovative way involving no sliding-parts mechanisms to create vibration, or flow pulsation, or sound, or motion (as in swimming-pool cleaners). Confidence in designing with highly flexible tubes will allow minimal resource consumption in manufacture of products to transport fluids, and will allow design use of the flow limitation property, whereby such a tube can control flow-rate.