Suppression of Cavitating Flow in Inducer by J-Groove
Suppression of Cavitating Flow in Inducer by J-Groove
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发表时间：
2003-11
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通讯作者：
H. Imamura;J. Kurokawa;J. Matsui;M. Kikuchi
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作者：
H. Imamura;J. Kurokawa;J. Matsui;M. Kikuchi
本研究的目的是控制和抑制J型槽在诱导轮中产生的空化现象。“J槽”是一种非常简单的抑制叶轮机械中几种异常现象的被动装置，它是由平行于机壳壁上压力梯度的浅槽组成的。本文通过实验的方法考察了J型槽对诱导轮的影响，测量了诱导轮的空化性能和壁面压力脉动。在叶尖附近的壳体壁上安装J型槽，利用诱导器叶尖周围的压差。结果表明，J型槽显著改善了空化性能，抑制了回流涡空化的发生。
The purpose of the study is to control and suppress the cavitation caused in the inducer by J-groove. "J-groove" composed of shallow grooves made parallel to the pressure gradient on the casing wall is a very simple passive device to suppress several anomalous phenomena in turbomachinery. In this study the effects of J-groove to the inducer are examined in experimental approach, where the cavitation performance and pressure fluctuation on the wall are measured. J-groove is installed in the casing wall at near the blade tip to use the pressure difference around the blade tip of inducer. The results showed that the cavitation performance is remarkably improved and onset of backflow vortex cavitiaon is suppressed by Jgroove.