扩散对受限振荡泡状流体的影响
The impact of diffusion on confined oscillated bubbly fluid
摘要：
本文研究了单分散泡状流体在两个平面固体壁面中的小振幅高频横向振动。这些振荡的频率被认为是高的，与典型的弛豫时间为一个单一的气泡相比，但体积振荡的本征频率。的时间平均的描述占相互耦合的阶段和气泡的扩散性。我们发现不均匀的液体平均静止的稳定状态。在相对低的频率下，检测到气泡在壁处或在平行于壁定向的平面中的积聚。这些一维状态被证明是不稳定的。在相对高的频率下，气泡在中心平面处积聚，并且溶液是稳定的。
英文摘要：
We consider the dynamics of monodisperse bubbly fluid confined by two plane solid walls and subjected to small-amplitude high-frequency transversal oscillations. The frequency these oscillations is assumed to be high in comparison with typical relaxation times for a single bubble, but comparable with the eigenfrequency of volume oscillations. A time-averaged description accounting for mutual coupling of the phases and the diffusivity of bubbles is applied. We find nonuniform steady states with the liquid quiescent on average. At relatively low frequencies accumulation of bubbles either at the walls or in planes oriented parallel to the walls is detected. These one-dimensional states are shown to be unstable. At relatively high frequencies the bubbles accumulate at the central plane and the solution is stable.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
