通过弯月面形状控制流动
Streaming controlled by meniscus shape
摘要：
在接近毛细管长度尺度的体系中，经常会出现一种称为弯月面波的表面波。由于弯月面形状决定了弯月面波的形式，因此所产生的流动循环具有与文献中最近报道的其他毛细重力波所引起的结构不同的结构。在本研究中，我们通过控制边界润湿性产生对称和反对称的弯月面形状，并通过垂直振荡弯月面来激发弯月面波。对称和反对称结构产生不同的表面毛细-重力波模式和流动结构。在两种配置中，流动循环的能量密度以强迫振幅的四次方的速率增加。在对称弯月面条件下，流动循环的流动对称性得以保持，而在反对称弯月面条件下，流动循环的流动对称性丧失。在我们的实验中，流动循环主要来源于弯月面下的Stokes边界层，并且可以用现有的流动理论成功地解释。
英文摘要：
Surface waves called meniscus waves often appear in the systems that are close to the capillary length scale. Since the meniscus shape determines the form of the meniscus waves, the resulting streaming circulation has a structure distinct from that caused by other capillary-gravity waves recently reported in the literature. In the present study, we produce symmetric and antisymmetric meniscus shapes by controlling boundary wettability and excite meniscus waves by oscillating the meniscus vertically. The symmetric and antisymmetric configurations produce different surface capillary-gravity wave modes and streaming flow structures. The energy density of the streaming circulation increases at the rate of the fourth power of the forcing amplitude in both configurations. The flow symmetry of streaming circulation is retained under the symmetric meniscus, while it is lost under the antisymmetric meniscus. In our experiments, the streaming circulation primarily originates from the Stokes boundary layer beneath the meniscus and can be successfully explained using the existing streaming theory.
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。
