热科学学报（英文版）2009，Vol.18Issue(4)：338-344,7.DOI:10.1007/s11630-009-0338-4
Dynamic behaviors of cavitation bubble for the steady cavitating flow
Dynamic behaviors of cavitation bubble for the steady cavitating flow
摘要
Abstract
In this paper, by introducing the flow velocity item into the classical Rayleigh-Plesset dynamic equation, a new equation, which does not involve the time term and can describe the motion of cavitation bubble in the steady cavitating flow, has been obtained. By solving the new motion equation using Runge-Kutta fourth order method with adaptive step size control, the dynamic behaviors of cavitation bubble driven by the varying pressure field downstream of a venturi cavitation reactor are numerically simulated. The effects of liquid temperature (corre-sponding to the saturated vapor pressure of liquid), cavitation number and inlet pressure of venturi on radial mo-tion of bubble and pressure pulse due to the radial motion are analyzed and discussed in detail. Some dynamic behaviors of bubble different from those in previous papers are displayed. In addition, the internal relationship between bubble dynamics and process intensification is also discussed. The simulation results reported in this work reveal the variation laws of cavitation intensity with the flow conditions of liquid, and will lay a foundation for the practical application of hydrodynamic cavitation technology.关键词
cavitation bubble/ bubble dynamics/ hydrodynamic cavitation/ cavitating flow/ process intensificationKey words
cavitation bubble/ bubble dynamics/ hydrodynamic cavitation/ cavitating flow/ process intensification分类
数理科学引用本文复制引用
Jun CAI,Xiulan HUAI,Xunfeng LI..Dynamic behaviors of cavitation bubble for the steady cavitating flow[J].热科学学报（英文版）,2009,18(4):338-344,7.基金项目
The authors gratefully acknowledge the support of the National Natural Science Foundation of China (Grant No.50806078)and the National High-Tech Research and Development Program of China (863 Program, Grant No.2006AA05Z203). （Grant No.50806078）
