文档详情

相界面上超声空化气泡聚并滑移促进的传质-声学技术.PDF

发布:2017-08-11约2.3万字共5页下载文档
文本预览下载声明
第28 卷第6 期 声 学 技 术 Vol.28, No.6 2009 年12 月 Technical Acoustics Dec., 2009 相界面上超声空化气泡聚并、滑移促进的传质 1 1 1 2 2 2 马空军 ,贾殿赠 ,孙文磊 ,包文忠 ,赵文新 ,靳冬民 (1. 新疆大学化学化工学院,乌鲁木齐 830046 ;2. 新疆天山水泥股份有限公司,乌鲁木齐 83000) 摘要:根据超声空化泡在相间特殊运动时周围流体流动特性,以相间传质渗透理论为依据,结合流体动力学原理, 在充分研究相界面上气泡行为的基础上,根据界面上超声空化气泡生长过程的动力学行为,导出了相界面上超声空 化气泡聚并和滑移促进的传质模型。在此基础上,建立了相界面上气泡滑移、聚并及脱离界面逸出这三种气泡行为 共同促进的传质模型,该模型可用于描述超声空化界面等相界面上的传质行为,为超声波强化传质过程提供了理论 依据。 关键词:超声空化泡;相界面;传质 中图法分类号:TB556 文献标识码:A 文章编号:1000-3630(2009)-06-0742-05 DOI 编码:10.3969/j.issn1000-3630.2009.06.012 Mass transfer induced by coalescence and slip of ultrasonic cavitation bubbles at phase interface 1 1 1 2 2 2 MA Kong-jun , JIA Dian-zeng , SUN Wen-lei , BAO Wen-zhong , ZHAO Wen-xin , JIN Dong-min (1. School of Chemistry and Chemistry Engineering . Xinjiang University, Urumchi 830046, China; 2. Xinjiang Tianshan Cement Co . Ltd . Urumqi 830006, China) Abstract: A mathematical model is derived for mass transfer coefficient induced by coalescence and slip of ultrasonic cavitation bubbles at phase interface based on the characteristic of fluid flow surrounding ultrasonic cavitation bubbles, the theory of fluid flow near the phase interface and the penetration theory of mass transfer combining with the principles of hydrokinetics, with reference to the result of the study of kinetic behaviour of ultrasonic cavitation bubbles in phase interface. Accordingly the model of mass transfer enhanced together by the slip, coalescence and detachment of gas bubbles on the phas
显示全部
相似文档