Cavitation erosion - scale effect and model investigations
Cavitation erosion - scale effect and model investigations
复制标题
空蚀 - 规模效应和模型研究
DOI：
10.1088/1742-6596/656/1/012047
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
P. Rutschmann
中科院分区：
文献类型：
--
作者：
F. Geiger;P. Rutschmann
本文的实验工作有助于阐明水力空化的侵蚀效应。对棱柱体剪切层中的瞬变云空化进行了综合空化冲蚀试验。用基于矿物的体积损失技术和基于金属的坑计数系统竞争性地确定了侵蚀模式和侵蚀速率。结果阐明了潜在的尺度效应，并揭示了强烈的非线性材料依赖性，这表明两种材料类型的损伤过程明显不同。此外，通过光学探测对空化云的大小和动力学进行了评估。云大小的波动显示出与最大侵蚀力相关的空化数的最大值。这一发现表明，将侵蚀过程与空化云动力学联系起来的模型方法是合适的。一个改进的实验装置预计将进一步澄清这些问题。
The experimental works presented in here contribute to the clarification of erosive effects of hydrodynamic cavitation. Comprehensive cavitation erosion test series were conducted for transient cloud cavitation in the shear layer of prismatic bodies. The erosion pattern and erosion rates were determined with a mineral based volume loss technique and with a metal based pit count system competitively. The results clarified the underlying scale effects and revealed a strong non-linear material dependency, which indicated significantly different damage processes for both material types. Furthermore, the size and dynamics of the cavitation clouds have been assessed by optical detection. The fluctuations of the cloud sizes showed a maximum value for those cavitation numbers related to maximum erosive aggressiveness. The finding suggests the suitability of a model approach which relates the erosion process to cavitation cloud dynamics. An enhanced experimental setup is projected to further clarify these issues.
DOI：
10.1017/cbo9781107338760
发表时间：
1995-02
期刊：
FUZZ-IEEE'99. 1999 IEEE International Fuzzy Systems. Conference Proceedings (Cat. No.99CH36315)
影响因子：
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作者：
C. Brennen
通讯作者：
C. Brennen