摘要
分析了含气量对粘性液体中球形单空泡脉动特性的影响。研究结果表明:随着泡内初始含气量的增加,空泡达到最大泡半径的时间延长;空泡膨胀的最大泡半径、收缩的最小泡半径和脉动周期均随初始含气量的增加而增加;同时,空泡膨胀和溃灭时泡壁的运动速度均随空泡初始含气量的变化而变化。无论含气量如何,在空泡收缩到最小泡半径附近,泡壁运动速度(收缩或膨胀)要明显快于其在最大泡半径附近;此外,受液体粘性影响,空泡膨胀和收缩过程明显变缓。
The effect of bubble content on cavitation bubble oscillation in glycerol-water mixture is investigated by the fiberoptical detection sensor based on the beam deflection principle in combination with theoretical analysis. The result indicates that the bubble content has an obvious influence on bubble oscillation. The maximum bubble radii and oscillation cycle at each oscillating cycle in different viscous fluid increase with bubble content. In the meantime, the relationship of the velocity of bubble wall vary with bubble content are also given in this paper. In addition, influenced by the liquid viscosity, the process of bubble expansion and shrinking velocity slow down.
出处
《光学与光电技术》
2010年第3期25-28,共4页
Optics & Optoelectronic Technology
基金
国家自然科学基金(60578015
60778007
60878037)
江苏省高校自然科学研究项目(09KJB510013)
南京邮电大学攀登计划(NY206076
NY207023
NY207030)资助项目
关键词
空泡
含气量
粘性
脉动
cavitaion bubble
bubble eontent
viscidity
oscillation
