Theoretical Analysis of Rotating Cavitation in Inducers.
Theoretical Analysis of Rotating Cavitation in Inducers.
复制标题
诱导器中旋转空化的理论分析。
DOI：
10.1299/kikaib.58.2052
复制
发表时间：
1992
期刊：
影响因子：
--
通讯作者：
Y. Yoshida
中科院分区：
文献类型：
--
作者：
Y. Tsujimoto;K. Kamijo;Y. Yoshida
本文用作动盘法分析了旋转空化。考虑了准定压性能、流量增益因子和空化柔度。观察到三种类型的不稳定模式：旋转空化传播速度比叶轮速度快，旋转空化传播相反的叶轮旋转方向，旋转失速传播速度比叶轮速度慢。结果表明，两种情况下的旋转空泡都是由正的质量流量增益因子引起的，而旋转失速则是由压力特性的正斜率引起的。给出了两种旋转空泡在质量流增益因子-空泡柔度平面内的稳定性图和传播速度图。分析结果和实验观察到的旋转空化进行了讨论。
Rotating cavitation is analysed by means of an actuator disk method. Quasi-steady pressure performance, mass flow gain factor and cavitation compliance are taken into account. Three types of destabilizing modes are observed : rotating cavitation propagating faster than the impeller speed, rotating cavitation propagating opposite to the impeller rotational direction, and rotating stall propagating slower than the impeller speed. It is shown that both of the rotating cavitations are caused by the positive mass flow gain factor, while rotating stall is by the positive slope of the pressure performance. Stability and propagation velocity maps are given for the two types of rotating cavitations in the mass flow gain factor-cavitation compliance plane. The results of the analysis and the experimentally observed rotating cavitations are discussed.