静电除尘器内电场、流场和颗粒行为的双向耦合模拟

田茂; 雷洪; 亓捷; 张立莹

doi:10.13205/j.hjgc.202601016

静电除尘器内电场、流场和颗粒行为的双向耦合模拟

doi: 10.13205/j.hjgc.202601016

田茂^1,2,
雷洪^1,2, ,,
亓捷²,
张立莹^1,2

1. 东北大学材料电磁过程研究教育部重点实验室, 沈阳 110819;
2. 东北大学冶金学院, 沈阳 110819

基金项目:

国家自然科学基金项目（U1460108）

详细信息

作者简介:
田茂（1998—），男，硕士，主要研究方向为静电除尘器、电磁流体力学。Tm01218@163.com

通讯作者:
雷洪（1973—），男，教授，博士生导师，主要研究方向为多相流、先进电磁冶金、智能冶金。leihong@epm.neu.edu.cn

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出版历程
- 收稿日期: 2024-12-18
- 网络出版日期: 2026-02-26
- 刊出日期: 2026-01-22

Two-way coupling simulation for electric field， flow field and particle behaviors in an electrostatic precipitator

TIAN Mao^1,2,
LEI Hong^{1,2
, ,},
QI Jie²,
ZHANG Liying^1,2

1. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;
2. School of Metallurgy, Northeastern University, Shenyang 110819, China

摘要

摘要: 为了深入研究线板式静电除尘器的电学特性和颗粒输运行为，采用开源软件OpenFOAM求解了Maxwell 方程组、连续性方程、动量方程、颗粒荷电和运动方程，研究了不同颗粒浓度下带电粒子对静电除尘器内的电场、流场和颗粒行为的影响。结果表明：颗粒空间电荷效应打破了电场强度、离子电荷密度和电场力对称分布的规律，颗粒浓度越高，非对称性越强。当颗粒浓度从0 mg/m³增加到500 mg/m³，电晕线附近的电场强度从1.4×10⁶V/m降至1.31×10⁶ V/m，第1根电晕线正对的收尘极附近的电场强度从7.5×10⁵ V/m增加到8.7×10⁵ V/m；离子电荷密度也呈下降趋势。颗粒浓度的增大导致电晕线附近电场力减小，极板附近的电场力增大，电场力对空气沿主流方向的速度有促进作用。颗粒浓度的增大也导致静电除尘器内颗粒轨迹出现向中心轴线偏移的现象；小尺寸颗粒的运动受湍流夹带作用的影响效果显著，粒径<5 µm的颗粒在湍流作用下轨迹会出现明显的分叉现象。
- 静电除尘器 /
- 双向耦合 /
- 电场 /
- 电子风 /
- 颗粒
Abstract: To study the electrical characteristics and particle transport behaviors of a wire-plate electrostatic precipitator， the open-source software OpenFOAM was applied to solve the Maxwell equations， continuity equations， momentum equations， particle charge-motion equations， and to investigate the effects of charged particles in the cases of different particle concentrations on the electric field， flow field， and particle behaviors in the electrostatic precipitator. The numerical results showed that the spatial charge effect of particles broke the law of symmetrical distribution of electric field strength， ionic charge density， and electric field force， and the greater the particle concentration， the stronger the asymmetry of the electric field. When the particle concentration increased from 0 mg/m³ to 500 mg/m³， the electric field intensity near the corona wire decreased from 1.4×10⁶ V/m to 1.31×10⁶ V/m， and the electric field intensity near the grounded plate toward the first corona wire increased from 7.5×10⁵V/m to 8.7×10⁵ V/m. The ionic charge density decreased with the increase in particle concentration. The increase in particle concentration led to a decrease in the electric field force near the corona wire and an increase in the electric field force near the plate， which had a promoting effect on the velocity of the air along the main flow direction. The increase in particle concentration also led to the phenomenon that the particle trajectories in the electrostatic precipitator shifted to the central axis. The movement of small particles was significantly affected by turbulent flow， and the trajectories of particles less than 5 µm bifurcated obviously in the case of turbulent flow.
- electrostatic precipitator /
- two-way coupling /
- electric field /
- electric wind /
- particle

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