文章摘要
马空军,黄玉代,贾殿赠,朱家骅.超声空化泡相界面逸出时相间传质的研究[J].声学技术,2008,(4):486~491
超声空化泡相界面逸出时相间传质的研究
A study of mass transfer induced by ultrasonic gas cavities evolving from phase interface
投稿时间:2008-04-01  修订日期:2008-06-02
DOI:
中文关键词: 超声空化泡  相界面  传质
英文关键词: ultrasonic gas cavity  phase interface  mass transfer
基金项目:新疆大学自然科学科学基金项目(BS060102);新疆自治区高校科研计划重点项目(XJEDU2007I06);新疆天山水泥股份有限公司博士后专项基金资助
作者单位E-mail
马空军 新疆大学化学化工学院, 乌鲁木齐, 830046 kjma028@sina.com 
黄玉代 新疆大学化学化工学院, 乌鲁木齐, 830046  
贾殿赠 新疆大学化学化工学院, 乌鲁木齐, 830046  
朱家骅 四川大学化学工程学院, 成都, 610065  
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中文摘要:
      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,分析了超声空化泡在相间的传质过程,由此建立了超声波声空化气泡相界面逸出时相间传质数学关系式,该式表明,超声功率可使传质系数增加,传质系数不仅与超声波声强近似呈线性关系,而且与扩散系数、气泡的气体体积流率的平方根成正比,同时还与空化泡半径Rd、界面面积S′等因素有关。采用文献实验数据验证文中关系式,与实验结果相吻合,能较好地描述相界面上逸出超声空化泡时液体中的传质行为。该关系式为超声波强化传质过程提供了理论依据。
英文摘要:
      A mathematical relation is derived for mass transfer coefficient at phase interface evolving ultrasonic gas cavities based on the characteristic of fluid flow surrounding ultrasonic gas cavities and the penetration theory of mass transfer,combining with the principles of hydrokinetics.This shows that the ultrasonic power can accelerate mass transfer,and the mass transfer coefficient induced by ultrasonic gas cavities y is not only approximately proportion to the intensity of ultrasonic,but also to the square root of the diffusion coefficient and the volume rate of gas caused by ultrasonic gas cavities,and meanwhile related to the factors such as bubble size Rd,interface area S′ and so on..The mathematical relation is checked with literature date.It shows that the mathematical relation is consistent with the results of experiments,and can better describe the behavior of mass transfer induced by ultrasonic gas cavity in liquid.So,a theoretical basis of using ultrasonic to strengthen mass transfer process is provided by the mathematical relation.
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