声场参数对双空化泡泡内高压及高温的影响  

The high pressure and high temperature of double cavitation bubbles under the sound field

作　　者：张鹏利[1,2] 林书玉[1] 朱华泽[2] 

机构地区：[1]陕西师范大学物理学与信息技术学院,陕西西安710119 [2]西安科技大学理学院,陕西西安710054

出　　处：《陕西师范大学学报（自然科学版）》2018年第1期37-44,共8页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金(11374200);陕西省科技厅工业攻关项目(2015GY182)

摘　　要：研究了声场作用下双空化泡泡内压强及中心温度的变化与影响其变化的主要参数。结果表明:较大空化泡内部反而具有较小的温度和压强。由于考虑了空化泡之间的相互抑制作用,导致双空化泡泡内压强峰值大于单一空化泡泡内压强峰值,而双空化泡泡内温度则明显小于单一空化泡泡内温度。不同的驱动频率和声压都会影响空化泡内压强和温度峰值。驱动声场频率越高,空化泡内部的压强越小,温度越低。驱动声压越大,空化泡更容易生长,且泡内压强和温度越高。The pressure and central temperature of double bubbles and the main parameters which would affect the pressure and temperature in the bubble are studied. The results show that the larger cavitation bubble has smaller temperature and pressure. Considering the mutual inhibition between cavitation bubbles, the pressure in double bubbles is larger than that in single cavitation bubble, but the temperature in two bubbles is much smaller than that in single cavitation bubble. In addition, the pressure and temperature in the cavitation bubble are affected by the different frequency, acoustic pressure and amplitude. As increase of frequency, the cavitation bubbles gain smaller pressure and lower temperature. The pressure and temperature in caritation bubble are increasing with acoustic pressure, and the bubbles grow easier in such case.

关 键 词：空化泡 驱动声压 泡内压强 温度 

分 类 号：O427.4[理学—声学]