Experimental Investigation on Cavitation Noise of Water Jet and Its Chaotic Behaviour
The cavitation noise signals were collected separately for the cavitation nozzle and general nozzle at the target position and the nozzle exit in the condition of different standoff distance.The features of signals frequency spectrum and power spectrum were analyzed for different nozzles.Based on chaotic theory,phase space reconstruction was processed and the maximum Lyapunov exponent was calculated separately for each cavitation signals time series.Under the condition of this experiment,the difference between the general nozzle and cavitation nozzle was mostly marked at the target position while the standoff distance is 35 mm,which mainly displayed at the high frequency segment.The maximum Lyapunov exponent calculated appeared at standoff distance 35 mm.At the nozzle exit,the noise signal of cavitation nozzle is different from the general nozzle.The difference also displayed at the high frequency segment,and no changing with the standoff distance.
cavitation water jet nozzle Lyapunov exponent chaos
Fenghua Zhang Haifeng Liu Junchao Xu Chuanlin Tang
School of Mechanical Engineering, Hunan University of Technology.Hunan Zhuzhou 412007,China
国际会议
台湾
英文
3919-3924
2011-12-11（万方平台首次上网日期，不代表论文的发表时间）