Investigation into Pressure Distribution and Cavitation Noise inside Spool Valve
The objective of this study is to investigate the cavitation mechanism of high-speed flow and the relationship with pressure distributions inside the throttling groove. Using a three-dimensional model of the spool valve and the k-ε equation, the pressure distributions and the characteristic of flow rate are numerically determined by CFD methods. To verify the results, a valve pocket with several transducers was performed to detect the pressure distribution inside the valve chamber. At the same time the bubbly flow was observed with high-speed imaging techniques. It is shown that pressure distribution inside the groove is sensitive to the valve port configuration. Pressure distribution, shearing force and flux separation in the valve chamber are the pacing factors which determine the formation and development of cavitation- Sound pressure level of noise induced by cavitation is determined by the bubble size and number passing through the valve notches.
Pressure Distribution CFD Valve Cavitation Noise
Du Xuewen Fu Xin Yang Huayong Ji Hong
The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University,310027, China School of Fluid Power & Control Engineering, Lanzhou University of Technology, Lanzhou 730050, China
国际会议
北戴河
英文
171-176
2007-06-06（万方平台首次上网日期，不代表论文的发表时间）