摘要
以水为工作介质,考虑了液体黏性、表面张力、可压缩性及湍流作用等情况,对文丘里管反应器中空化泡在声场作用下的动力学行为特性进行了数值研究.分析了超声波频率、声压及喉径比对空化泡运动特性以及空化泡崩溃时所形成泡温以及压力脉冲的影响.结果表明,超声将水力空化泡运动调制成稳态空化,有利于增强空化效果.
Considering liquid viscosity,surface tension,liquid compressibility and turbulence,the dynamical behaviors of cavitation bubble in venturi cavitation reactor are numerically investigated with using acoustic field regarding water as a work medium.The effects of acoustic frequency,acoustic pressure and ratio of throat to pipe diameter on cavitation bubble dynamics,bubble temperature and pressure pulse by rapid collapse of cavitation bubble are analysed.The results show that bubble motion of hydrodynamic cavitation modulated by ultrasound,becomes the high energy stable cavitation.It is favorable for enhancing the cavitation effect.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第8期379-388,共10页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10974127)
中央高等学校基本科研基金(批准号:GK200901019)资助的课题~~
关键词
超声波
水力空化
湍流
气泡动力学
ultrasound
hydrodynamic cavitation
turbulence
bubble dynamics
