魏严凇¹,陈林林¹,郑光宗¹,陈 皞²,谷海峰³,季松涛¹

（1.中国原子能科学研究院,北京 102413;2.中国核动力研究设计院,四川 成都 610213;3.哈尔滨工程大学 核科学与技术学院,黑龙江 哈尔滨 150001）

DOI：10.13732/j.issn.1008-5548.2021.01.006

收稿日期：2020-07-16，修回日期：2020-10-07，在线出版时间：2020-11-02 10:30。

基金项目：国家科技重大专项，编号:2017ZX06004006。

第一作者简介：魏严凇(1983—)，男，副研究员，硕士生导师，研究方向为反应堆安全与事故分析。E-mail:weiys@ciae.ac.cn。

通信作者简介：季松涛(1967—)，男，工学博士，研究员，博士生导师，研究方向为反应堆安全及燃料性能。E-mail:songtaoji@139.com。

摘 要：针对安全壳内气溶胶再夹带问题，设计液池表面气泡破碎特性研究可视化试验装置，进行典型试验条件下的气溶胶再夹带试验，验证高速摄影拍摄法对百微米级含气溶胶液滴进行测量的可行性;通过对液滴进行拍摄和分析，研究液池中气溶胶种类、质量浓度、水温对气泡破碎后液滴粒径分布的影响。结果表明:气溶胶种类、质量浓度、水温均对液滴粒径分布产生影响;升高温度和提高气溶胶悬浊液质量浓度，均使得液滴粒径分布变小; BaSO₄悬浊液较TiO₂悬浊液更不易生成夹带液滴;不同试验条件下的液滴粒径分布公式拟合结果较好。

关键词：气泡破碎；夹带液滴；气溶胶；粒径分布

Abstract：Aiming at the problem of aerosol re-entrainment in containment,a visual experimental device was designed to study the bubble breaking characteristics on the surface of liquid pool. The aerosol re-entrainment experiments under typical experimental conditions were carried out to verify the feasibility of the high-speed photography method for measuring 100-micron scale aerosol droplets. The effects of aerosol type,mass concentration and water temperature on the droplet size distribution after bubble breaking were studied by high-speed photography. The results show that the aerosol type,mass concentration and water temperature all have a certain effect on the droplet size distribution. Increasing the temperature and increasing the mass concentration of the aerosol suspension make the droplet size distribution smaller. BaSO₄ suspension is less likely to generate entrained droplets than TiO₂ suspension. The fitting results of the droplet size distribution formula under different test conditions are better.

Keywords：bubble breaking; entrained droplets; aerosol; particle size distribution

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