Effects of the Inlet Velocity Profiles on the Prediction of Velocity Distribution inside an Electrostatic Precipitator (ESP)

Abstract

Abstract-In this study, the development of CFD model for the description of operation of electrostatic precipitator has been developed. The model is based on the simulation analysis whereby focused on the gas flow by time-averaged conservation equation of mass and momentum. 2D geometry model was extensively applied due to ease the geometry and analysis. The flow simulation was performed by using computational fluid dynamics (CFD) code Fluent. Numerical calculations for the air flow were calculated using the Reynolds-averaged Navier-Stokes equation coupled with the realizable k-ε turbulence model equations. Simulations were performed using three velocities at the inlet boundary by considering a uniform (ideal) velocity profile. Simulation with the low velocity profile gives a better flow rate efficiency between the outlet and inlet of the ESP. Overall, all the three velocities give more than 90% of efficiency of the air flow inside ESP chamber.Index Terms-Electrostatic precipitator, CFD, velocity and flow simulation.

Numerical Prediction of Homogeneity of Gas Flow through Perforated Plates

“…Authors have found that local eddy downstream of the plate is the main cause of pressure loss. Effects of air inlet velocity magnitude on the velocity distribution in ESP was investigated by Yusop et al [15]. Again, a 2D CFD model was used in their investigations.…”

“…The above assumptions are commonly applied for modelling of flow distribution systems for ESP [3,8,15,19]. The turbulence model k-ω was applied for the discussed case of flow distributor [22].…”