哈尔滨工程大学学报2024，Vol.45Issue(12)：2290-2297,8.DOI:10.11990/jheu.202409007
大空间内气溶胶自然沉降去除速率及空间分布特性分析
Analysis of the aerosol natural deposition removal rate and spatial distribution characteristics in a large space
摘要
Abstract
To investigate the natural deposition and movement of aerosols in a containment following a serious acci-dent in a pressurized water reactor,experiments were employed using a large-scale containment model with a vol-ume of 127 m3.Aerosol deposition behaviors at different positions within the large-scale space environment were analyzed through particle size spectrum changes.Key experimental data,such as the attenuation index and changes in particle size,were collected.This study explored how aerosols naturally deposit under nonuniform conditions and examined the deposition rate and spatial distribution changes at different positions.In addition,it analyzed the in-fluence of key variables such as pressure and steam share on the spatial aerosol deposition rates.The findings re-vealed that under uneven concentration conditions,the overall decrease in aerosol number concentration within the containment was minimal.However,when the concentration was uniform,the aerosol sedimentation behavior across different positions followed a consistent pattern.In addition,thermal parameters,such as temperature and pres-sure,had a substantial influence on the sedimentation rates,with a uniform impact across all positions.关键词
气溶胶/自然沉降/气溶胶分层/气溶胶空间分布/凝并/衰减指数/大尺度安全壳/严重事故Key words
aerosol/natural deposition/aerosol stratification/spatial distribution of aerosols/coagulation/attenua-tion index/large-scale containment/severe accident分类
能源科技引用本文复制引用
李韬,谷海峰,王辉,孙庆洋,周艳民,于建群,汤添皓,黄宁远..大空间内气溶胶自然沉降去除速率及空间分布特性分析[J].哈尔滨工程大学学报,2024,45(12):2290-2297,8.基金项目
国家自然科学基金项目(U22B20134). （U22B20134）
