An improved sectional model to simulate multi-component aerosol dynamics in a containment of pressurized water reactor

Lu, JunjingChina Nucl Power Engn Co Ltd, Beijing 100840, Peoples R China. (author)

QC 20210917
Simulating an evolving aerosol population in a reactor containment is essential for estimating the radioactivity that is possible to leak to the environment. In this study, a sectional model is developed to simulate multi-component aerosol dynamics in the containment during severe ac-cidents of a pressurized water reactor by improving the widely used MAEROS (Multicomponent AEROSol) model. An important advantage of the improved model is its simplified calculation method by introducing a series of correction factors to the equation coefficients when the thermal boundary conditions and the aerosol particle density in the containment change continuously. In addition, the restriction of the maximum section number in the MAEROS model is removed. The reliability of the model is validated against four analytical solutions and three sets of test data. Moreover, the improvements in the model are also proven to be necessary to effectively capture the influences of thermal boundary conditions and aerosol particle density on aerosol dynamics.

Zhang, TianqiChina Nucl Power Engn Co Ltd, Beijing 100840, Peoples R China. (author)
Mao, YaweiChina Nucl Power Engn Co Ltd, Beijing 100840, Peoples R China. (author)
Yuan, YidanChina Nucl Power Engn Co Ltd, Beijing 100840, Peoples R China. (author)
Ma, RubingChina Nucl Power Engn Co Ltd, Beijing 100840, Peoples R China. (author)
Yang, XiaomingChina Nucl Power Engn Co Ltd, Beijing 100840, Peoples R China. (author)
Yang, ZhiyiMEE China, Nucl & Radiat Safety Ctr, Beijing, Peoples R China. (author)
Ma, WeiminKTH,Kärnkraftssäkerhet(Swepub:kth)u1wa8dki (author)
China Nucl Power Engn Co Ltd, Beijing 100840, Peoples R China.MEE China, Nucl & Radiat Safety Ctr, Beijing, Peoples R China. (creator_code:org_t)

By the author/editor: Lu, Junjing; Zhang, Tianqi; Mao, Yawei; Yuan, Yidan; Ma, Rubing; Yang, Xiaoming; show more...; Yang, Zhiyi; Ma, Weimin; show less...

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