东南大学学报（自然科学版）2025，Vol.55Issue(3)：759-766,8.DOI:10.3969/j.issn.1001-0505.2025.03.016
颗粒荷电差异下料仓静电场分布特性研究
Study on distribution characteristics of electrostatic field in silo under particle charging difference
摘要
Abstract
To investigate the electrostatic discharge risks of charged powders in industrial silos,an electro-static field model is optimized considering particle non-uniformity,charge variation,and charge relaxation.The electrostatic field characteristics of cylindrical-conical silos with different fill heights,particle mass flow rates,and silo dimensions are analyzed.The variation of the spatial distribution of the electric field,the maxi-mum field intensity,and the electric field along the silo walls is studied.The results indicate that when particle charge variation and charge relaxation are considered,the strong electric fields shift closer to the powder heap surface.The maximum field intensity is correlated with the surface area of the powder heap,while the peak wall electric field decreases significantly with the fill height increases.As the powder filling rate increases,the maximum electric field strength in the silo increases,while the spatial electric field distribution changes.The growth rate of the wall electric field intensifies with the increase of the fill height,increasing the risk of electro-static discharge.When the silo filling diameter decreases,the maximum field intensity slightly decreases in the initial filling stages but sharply increases as height reaches 2 m,with the significantly enhanced wall elec-tric field,causing a sharp increase of the risk of electrostatic discharge.关键词
荷电粉体/静电/料仓/电荷弛豫/电场Key words
charged powder/static electricity/silo/charge relaxation/electric field分类
通用工业技术引用本文复制引用
张高强,李蒙,王巧,陈晓平,马吉亮,李健,梁财..颗粒荷电差异下料仓静电场分布特性研究[J].东南大学学报（自然科学版）,2025,55(3):759-766,8.基金项目
国家自然科学基金资助项目(51976039). （51976039）
