摘要
将由速度势叠加原理得到的双泡超声空化动力学微分方程归一化,通过matlab语言编程计算,分析了水中空化泡的线度、双泡间距、声压幅值、声波频率等因素对空化过程的影响.在双泡超声空化动力学微分方程中引入双频超声,探讨了双泡双频超声问题.研究表明泡的线度是决定空化特性的主要因素,声压幅值对空化特性的影响最大,其次是超声波的频率;双泡间的相互作用影响空化特性,这种影响随双泡间距的增大而减弱;双频超声对双泡空化特性的影响有限,这种影响在两超声分量的声压幅值相等时较强.
Double-bubble ultrasonic cavitation dynamic differential equation obtained from superposition principle is normalized.MATLAB is used to analyse the effects of bubble linearity,double-bubble distance,sound frequency,sound pressure amplitude on cavitation process.Bifrequency ultrasound is introduced into the equation under discussion in this article.The calculation results show that bubble linearity is a main factor,which determines cavitation characteristics.The effect of sound pressure is strongest,and the frequency effect is the next strongest.Double bubble interactions affect cavitation characteristics to a certain extent,which reduces with distance increasing.Bifrequency ultrasound has a limited effect on cavitation characteristics,and it turns biggest when two component pressure amplitudes are equal.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第4期475-479,共5页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10674048)
广东省自然科学基金(批准号:10251064101000007)资助的课题~~
关键词
超声空化
双泡
双频超声
ultrasonic cavitation
double bubble
bifrequency ultrasound
