论文标题
液体界面形状和传输现象是由空间不均匀振动引起的
Liquid interface shaping and transport phenomena induced by spatially inhomogeneous vibrations
论文作者
论文摘要
振动可以动态稳定，否则不稳定的液体界面并产生新的动态平衡，称为振荡 - 平衡。通常，振动在液体中是均匀的，并且液体界面几乎保持平坦。在这里，我们通过利用沉没气泡的共振振荡来产生受控的垂直振动梯度。局部增加的振动幅度可引起可以控制和设计的液体界面的局部升高。界面的平均抬高可以通过实验测试的简单公式将理论上与局部振动振幅联系起来。另外，界面处的浮体的传输可以由液体振动的振幅梯度触发的次级流诱导。
Vibrations can dynamically stabilize otherwise unstable liquid interfaces and produce new dynamic equilibria, called vibro-equilibria. Typically, the vibrations are homogeneous in the liquid and the liquid interface remains approximately flat. Here, we produce controlled vertical vibration gradients by taking advantage of the resonant oscillations of sinking submerged bubbles. The locally increased amplitude of the vibrations induces a local elevation of the liquid interface that can be controlled and engineered. The mean elevation of the interface can be linked theoretically with the local vibration amplitude by a simple formula that is tested experimentally. In addition, the transport of a floating body at the interface can be induced by secondary flows triggered by the amplitude gradients of the liquid vibrations.
