This paper focuses on the different forms that individual cavitating events may take when the cavitation number is below the inception value (but not so low as to produce only attached cavities) and individual nuclei trigger individual cavitation events. It is a sequel to those of Kuhn de Chizelle et al. (1992a, 1992b, 1995) which described a set of cavitation scaling observations on simple Schiebe headforms conducted in the US Navy Large Cavitation Channel (LCC). The most common events observed in those experiments were traveling, hemi-spherical shaped bubbles which grew and collapsed as they were convected through the low pressure region on the headform. Several interesting variations were also observed, including the development of bubble tails and the triggering of patches, or local regions of attached cavitation. In the present paper, the frequency of occurrence of the various types of events is analyzed as well as how those probabilities changed with cavitation number, velocity and headform size. In general, the probabilities of tails and patches increased with decreasing cavitation number, but they also increased with increasing headform size and increasing velocity. A specific parametric dependence on these variables is suggested.
展开▼
机译：本文侧重于各个空化事件可能需要的不同形式，当空化数低于成立值（但不那么低，以产生只有附加的空腔）和单个核触发单个空化事件。这是Kuhn de Chizelle等人的续集。 （1992A，1992B，1995），在美国海军大空化通道（LCC）中进行了一套关于简单的Schiebe头部的空化缩放观测。在这些实验中观察到的最常见事件是行进，随着轮廓上的低压区域对其进行成长和塌陷的大麻球形气泡。还观察到几种有趣的变化，包括发育泡沫尾和贴片的触发，或附着的局部区域。在本文中，分析了各种类型事件的发生频率以及这些概率如何利用空化数，速度和头部尺寸变化。通常，尾部和贴片的概率随着空化数而增加，但随着性质尺寸的增加和速度增加，它们也增加了。提出了对这些变量的特定参数依赖性。
展开▼
