Interior non-uniformity of acoustically excited oscillating gas bubbles  

作　　者：Yu-ning Zhang Xiao-fei Li Zhong-yu Guo 

机构地区：[1]Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (Ministry of Education), School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China [2]Key Labor at oiy of Fluid and Power Machinery, Ministry of Education, Xihua IJnivarsily, Chengdu 610039, China [3]College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China [4]Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum-Beijing, Beijing 102249, China

出　　处：《Journal of Hydrodynamics》2019年第4期725-732,共8页水动力学研究与进展B辑（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 51506051,51606221);supported by the Open Research Fund Program of Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University (Grant Nos. szjj2019-002,szjj2019-004,szjj-2017-100-1-002).

摘　　要：In the present paper, the interior non-uniformity of oscillating gas bubbles in liquids under an acoustic field is theoretically investigated, as well as the temperature non-uniformity in the surrounding liquid. The pressure, the density and the temperature inside the gas bubbles are quantitatively predicted for a wide range of bubble Mach numbers. It is shown that the bubble interior non-uniformity increases significantly with the increase of the bubble Mach number. In the case of a large Mach number, the values of aforementioned paramount parameters at the bubble center are significantly larger than those at the bubble interface. Except for a very thin layer close to the bubble interface, the effects of the temperature non-uniformity in the bulk liquid could be safely ignored.

关 键 词：CAVITATION gas BUBBLES acoustic field radial oscillation NON-UNIFORMITY MACH number 

分 类 号：T[一般工业技术]