论文标题
通过在固体流体界面跨固体表面润湿性变化的固体流体界面的波传播动态空化。
Dynamic Cavitation Inception by Wave Propagation Across Solid-Fluid Interface with Varying Solid Surface Wettability
论文作者
论文摘要
流体结构相互作用（FSI）问题很重要，因为它们可能会对结构造成严重破坏。在某些FSI问题中，相互作用机制在很大程度上取决于固体流体界面之间的波传播。在这项研究中，我们尝试对固体表面润湿性对沿固体流体界面的波传播的影响进行定量评估，而在纵向波传播朝向界面的情况下。在实验过程中，尽管固体缓冲液运动不断压缩水，但由于在循环中跨界面传播的透射拉伸波传播，空气泡似乎起源于缓冲液界面。据证实，由于空化发生的变化，由于润湿性可能会改变波动的界面条件。还可以确定，润湿性越多，气态强度越严格，而缓冲液损失的能量与存储在水中的能量之间的差异越大。因此，可以通过考虑从固体传递到水的能量来定量评估空化开始对使用FSI固体流体界面的波传播的影响。
Fluid-structure interaction (FSI) problems are important because they may induce serious damage to structures. In some FSI problems, the interaction mechanism is strongly dependent on the wave propagation across the solid-fluid interface. In this study, we attempted a quantitative evaluation of the effect of the solid surface wettability on the wave propagation across the solid-fluid interface with FSI in the case of longitudinal wave propagation vertically towards the interface. During the experiments, while the water was continuously compressed by the solid buffer motion, cavitation bubbles appeared being originated from the buffer-water interface as a result of the transmitted tensile wave propagating across the interface in a cycle. It was confirmed that interfacial boundary condition as wettability could change the wave transmission behavior owing to changes in the cavitation occurrence. It was also confirmed that the worse the wettability, the severer the cavitation intensity, and the greater the difference between the energy lost by the buffer and the energy stored in the water. Consequently, the effect of the cavitation inception on the wave propagation at the solid-fluid interface with FSI could be quantitatively evaluated by considering the energy transferred from the solid to the water.
