Numerical simulation of temperature effect on particle forces in electrostatic precipitators

doi:10.7523/j.issn.2095-6134.2017.02.008

Abstract

Abstract: A computational fluid dynamics (CFD) model is proposed to describe the wire-plate electrostatic precipitator (ESP) in high temperature condition. In this model, the complex interactions among the electric field, temperature field, fluid dynamics, and the particulate flow are taken into account. The finite volume method is used to solve the electric field and the Euler-Lagrange model is used to describe particle-laden flows. The influences of high temperature on particle characteristics in ESP are investigated in the current simulation. Numerical results show that Coulomb force decreases while the Saffman lift force, Brownian force, and drag force increase with the temperature. Besides, the increasing rate of drag force is faster than that of Coulomb force, which may cause the reduced efficiencies at high temperature.

Key words: temperature, electrostatic precipitation, electro-hydrodynamic, particle force

CLC Number:

TK123

BI Wenjian, LI Yan, LUO Kun, FAN Jianren. Numerical simulation of temperature effect on particle forces in electrostatic precipitators[J]. , 2017, 34(2): 172-178.

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