Abstract
Cavitation is one of the serious problems in the operation of the turbo-pump because it causes the noise, vibration and erosion in the pump. However, the deterministic method to suppress the cavitation in turbo-pump has not yet been established in spite of the many efforts in the past. 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 mounted 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 are examined experimentally, where the cavitation performance and pressure fluctuation on the wall are measured. The results showed that the cavitation performance is remarkably improved by J-groove
