A Comprehensive Study of Erosion Due to Partial Cavitation

9523045格列佛将与设在奥伯纳赫的德国瓦瑟巴乌的Versuhsanstalt皮草研究所合作进行一项空化研究。该研究的目的是确定空穴剥离的主要物理特征，并利用这些结果来改进现有的空化侵蚀损伤模型。将在两个不同特征的水洞中研究空穴尾缘的云空化形成，一个在德国，另一个在PI的研究所，以消除任何与试验台相关的尺度效应。我们将对二维和椭圆形水翼进行研究，以了解云空化和非定常薄片空化之间的关系。水翼将同时使用韧性探头和压敏压电薄膜进行测量，以获得点蚀速率与云空化冲击压力事件的统计数据之间的直接关联。这一结果将与常规振动空化装置中的类似研究相关联。***

9523045 Gulliver A study of cavitation will be undertaken in cooperation with the German Versuchsanstalt fur Wasserbau in Obernach. The goal of the study is to identify the major physical characteristics of cavity detachment and to use these results to improve existing models for cavitation erosion damage. The formation of cloud cavitation at the trailing edge of a cavity will be studied in two different water tunnels with different characteristics, one in Germany and the other at the PI's institution, in order to eliminate any test rig-related scale effects. Both 2-D and elliptic hydrofoils will be studied to understand the relationship between cloud cavitation and unsteady sheet cavitation. The hydrofoils will be instrumented with both ductile probes and pressure sensitive piezoelectric film to obtain a direct correlation between pitting rate and the statistics of impulsive pressure events in cloud cavitation. The results will be correlated with similar studies in the conventional vibratory cavitation apparatus. ***