Effect of cavitation bubble collapse on hydraulic oil temperature  

作　　者：沈伟 张健 孙毅 张迪嘉 姜继海 

机构地区：[1]Department of Mechatronics Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China [2]Department of Mechatronics Engineering,Harbin University of Commerce,Harbin 150000,China [3]Beijing Institute of Precision Mechatronics and Control Equipment,Beijing 100076,China [4]School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150000,China

出　　处：《Journal of Central South University》2016年第7期1657-1668,共12页中南大学学报（英文版）

基　　金：Projects(51505289,51275123)supported by the National Natural Science Foundation of China

摘　　要：Cavitation bubble collapse has a great influence on the temperature of hydraulic oil. Herein, cone-type throttle valve experiments are carried out to study the thermodynamic processes of cavitation. First, the processes of growth and collapse are analysed, and the relationships between the hydraulic oil temperature and bubble growth and collapse are deduced. The effect of temperature is then considered on the hydraulic oil viscosity and saturated vapour pressure. Additionally, an improved form of the Rayleigh–Plesset equation is developed. The effect of cavitation on the hydraulic oil temperature is experimentally studied and the effects of cavitation bubble collapse in the hydraulic system are summarised. Using the cone-type throttle valve as an example, a method to suppress cavitation is proposed.Cavitation bubble collapse has a great influence on the temperature of hydraulic oil. Herein, cone-type throttle valve experiments are carried out to study the thermodynamic processes of cavitation. First, the processes of growth and collapse are analysed, and the relationships between the hydraulic oil temperature and bubble growth and collapse are deduced. The effect of temperature is then considered on the hydraulic oil viscosity and saturated vapour pressure. Additionally, an improved form of the Rayleigh-Plesset equation is developed. The effect of cavitation on the hydraulic oil temperature is experimentally studied and the effects of cavitation bubble collapse in the hydraulic system are summarised. Using the cone-type throttle valve as an example, a method to suppress cavitation is proposed.

关 键 词：CAVITATION bubble collapse hydraulic oil temperature Rayleigh-Plesset equation cone-type throttle valve 

分 类 号：O35[理学—流体力学]