QI Zhichao1, WANG Hui1, SUN Xiaohui1, CHEN Qiaoyan1, YU Suyuan2
(1. China Nuclear Power Engineering Co., Ltd., Beijing 100840, China;2. Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)
Abstract：The decay of radioactive aerosols leads to the accumulation of surface charges and the occurrence of electrostatic interactions among charged particles, thereby influencing the evolution and migration of aerosols. To study the impact of particle charging on condensation behavior, a comprehensive charging-coagulation kinetic equation was formulated. Subsequently, the bivariate group balance equation was discretized and numerically solved using the sectional method and cell average technology. A computational code was developed and validated through comparison with approximate analytical solutions and classical experiments. The results show that the simultaneous charging-coagulation model is capable to accurately predict the simultaneous charging-coagulation behavior of radioactive aerosols and elucidate the direct effect of particle charging on the coagulation behavior.
Keywords：radioactive aerosol; charging-coagulation model; bivariate population balance equation; sectional method
Get Citation：QI Z C, WANG H, SUN X H, et al. Development of simultaneous charging and coagulation model for radioactive aerosols[J]. China Powder Science and Technology, 2023, 29(6): 115-124.
DOI：10.13732/j.issn.1008-5548.2023.06.011
Received：2023-06-02,Revised：2023-09-06,Online：2023-10-10 18:12。
Funding Project：国家重点研发计划项目,编号:2020YFB1901401。
First Author：齐志超(1999—),男,硕士研究生,研究方向为反应堆安全分析。E-mail: thu2017qzc@163.com。
Corresponding Author：王辉(1986—),男,高级工程师,研究方向为反应堆安全分析。E-mail: wanghuia@cnpe.cc。
CLC No：TB44; TL364
Type Code：A
Serial No：1008-5548(2023)06-0115-10
