哈尔滨工程大学学报2023，Vol.44Issue(12)：2143-2150,8.DOI:10.11990/jheu.202309016
含气溶胶液相表面单气泡排液特性
An experimental study on the single bubble film drainage characteristics on the free surface with aerosol
摘要
Abstract
To investigate the droplet entrainment phenomenon caused by the bubble burst on the free surface in se-vere nuclear reactor accidents,this study employs high-speed photography to visualize the single bubble burst phe-nomenon.The diameter,lifetime,burst position,and film opening rate of the bubble are obtained using the image processing technique.The film thickness under different working conditions is calculated.The changes in the bub-ble lifetime distribution and bubble film thickness with time are investigated,and the effects of liquid temperature and aerosol concentration are analyzed.The results show that the bubble lifetime obeys the Weibull distribution with a shape parameter of 4/3.The average bubble lifetime increases with aerosol concentration,and the film thickness decays with bubble lifetime in a power-law with an exponent of-2/3.Additionally,the film thickness increases with the liquid temperature and aerosol concentration.Under the condition of deionized water,the probability of the bubble bursting at the bottom increases with the liquid temperature,and the probability increases after adding aero-sol.The results can provide a reference for predicting the release amount of droplets and aerosols under accident conditions.关键词
核反应堆严重事故/气泡/气溶胶/高速摄影/排液特性/气泡寿命/威布尔分布/液膜厚度Key words
severe nuclear reactor accident/bubble/aerosol/high-speed photography/film drainage characteristic/bubble lifetime/Weibull distribution/film thickness分类
能源科技引用本文复制引用
虞想,谷海峰,马钎朝,于建群,周艳民,梁辉..含气溶胶液相表面单气泡排液特性[J].哈尔滨工程大学学报,2023,44(12):2143-2150,8.基金项目
国家重点研发计划(2020YFB1901401) （2020YFB1901401）
