含气量对黏性液体中空泡脉动特性的影响  

Influence of bubble content on laser-induced cavitation bubble oscillation in glycerol-water mixture

作　　者：赵瑞[1] 徐荣青[1] 梁忠诚[1] 陆建[2] 倪晓武[2] 

机构地区：[1]南京邮电大学光电工程学院,南京210003 [2]南京理工大学应用物理系,南京210094

出　　处：《物理学报》2009年第12期8400-8405,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60578015;60778007;60878037);南京邮电大学攀登计划(批准号:NY206076;NY207023;NY207030);江苏省高校自然科学研究基金(批准号:09KJB510013)资助的课题~~

摘　　要：采用自行研制的高灵敏度光偏转测试系统,研究黏性液体中激光空泡脉动特性.判定了空泡两次脉动对应的最大和最小泡半径,进而计算了激光空泡在前两次脉动过程中泡内的含气量.研究表明:泡内含气量对泡脉动特性有较大影响.随着脉动次数的增加,空泡泡内含气量增大.空泡最大泡半径随含气量的增加而增大.此外,受液体黏性影响,空泡膨胀和收缩过程明显变缓.The effect of viscosity and bubble content on cavitation bubble oscillation is investigated by the fiber-optical sensor based on the beam deflection in combination with theoretical analysis. The maximum bubble radius at each oscillating cycle in different viscous fluid is determined by experiment. It is observed that the maximum bubble radius at each oscillating cycle does not decrease but increases. A reasonable explanation based on experimental results and numerical calculation is given to this anomaly. The results indicate that both the bubble content and the viscosity have obvious influence on the bubble oscillation and it does increase during the bubble oscillating cycle.

关 键 词：含气量 黏性 激光空泡 脉动特性 

分 类 号：O357.1[理学—流体力学]