Research on the noise induced by cavitation under the asymmetric cavitation condition in a centrifugal pump

9th International Symposium on Cavitation

Lu, J.X.^1 ; Yuan, S.Q.^1 ; Yuan, J.P.^1 ; Ren, X.D.^2 ; Pei, J.^1 ; Si, Q.R.^1

National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu

212013, China^1

School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu

212013, China^2

关键词: Acoustic pressures;    Asymmetric cavitation;    Broadband pulse;    Experimental investigations;    Hydraulic tests;    Power spectrum density;    Time domain;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012102/pdf
DOI  :  10.1088/1742-6596/656/1/012102

来源: IOP

【 摘 要 】

An experimental investigation has been carried out to research the noise induced by cavitation under the asymmetric cavitation (AC) condition in a centrifugal pump. The acoustic pressure signals at the pump inlet and outlet were measured respectively during the development of cavitation in a closed hydraulic test rig. It could be found that both the pump inlet and outlet acoustic pressures changed obviously with the development of cavitation. The time domain and the power spectrum density of the pump inlet and outlet acoustic pressure pulsations were analyzed. The broadband pulses of the acoustic pressure pulsations were found and the reasons for the phenomenon were given.