A Study of Swirling Backflow and Vortex Structure at the Inlet of an Inducer.
A Study of Swirling Backflow and Vortex Structure at the Inlet of an Inducer.
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导流器入口处旋流回流和涡流结构的研究。
DOI：
10.1299/jsmeb.42.451
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
A. Acosta
中科院分区：
文献类型：
--
作者：
K. Yokota;Kazuhiro Kurahara;Dai Kataoka;Y. Tsujimoto;A. Acosta
本文描述了一种出现在回流区边界上的诱导器入口涡结构。通过在σ-0.050空化数下观察到的空化空隙，用高速视频记录了涡的结构。用两个激光位移传感器对其进行了定量测量。根据激光位移传感器对涡流空化通道的响应输出，确定了涡丝的通过频率和形状。结果表明，涡丝的数量、传播角速度和径向位置取决于进口的稳定速度分布
We describe a vortex structure at the inlet of an inducer which appears on the boundary of backflow region. The vortex structure was visualized by the cavitation voids found by operating at cavitation number of σ-0.050 and recorded by a high speed video. It was measured quantitatively by two laser displacement sensors. The passing frequency and the shape of vortex filaments were determined from the outputs of the laser displacement sensors which respond to the passage of the vortex cavitation. The results show that the number of vortex filaments, their propagation angular velocity and radial location depend on the steady velocity profile at the inlet