Experimental Study on EHD Flow Transition in a Small Scale Wire-plate ESP

Chuan Wang 1 , Zhenqiang Xie 1 , Binggui Xu 2 , Jun Li 1  and Xu Zhou 1
  • 1 School of Mechanical and Electrical Engineering, Southwest Petroleum University, Xindu Avenue, No.8, 610500, Chengdu, China
  • 2 Drilling Mechanical Department, CNPC Drilling Research Institute, Huanghe Street, No.5, 102206, Beijing, China


The electrohydrodynamic (EHD) flow induced by the corona discharge was experimentally investigated in an electrostatic precipitator (ESP). The ESP was a narrow horizontal Plexiglas box (1300 mm×60 mm×60 mm). The electrode set consisted of a single wire discharge electrode and two collecting aluminum plate electrodes. Particle Image Velocimetry (PIV) method was used to visualize the EHD flow characteristics inside the ESP seeded with fine oil droplets. The influence of applied voltage (from 8 kV to 10 kV) and primary gas flow (0.15 m/s, 0.2 m/s, 0.4 m/s) on the EHD flow transition was elucidated through experimental analysis. The formation and transition of typical EHD flows from onset to the fully developed were described and explained. Experimental results showed that the EHD flow patterns change depends on the gas velocity and applied voltage. EHD flow starts with flow streamlines near collecting plates bending towards the wire electrode, forming two void regions. An oscillating jet forming the downstream appeared and moved towards the wire electrode as voltage increased. For higher velocities (≥0.2 m/s), the EHD transition became near wire phenomenon with a jet-like flow structure near the wire, forming a void region behind the wire and expanding as voltage increased. Fully developed EHD secondary flow in the form of counter-rotating vortices appeared upstream with high applied voltage.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • [1] Robinson, M. (1971). Electrostatic Precipitation. New York: Wiley Interscience.

  • [2] Oglesby, S., Nichols, G.B. (1978). Electrostatic Precipitation. New York: Marcel Dekker Inc.

  • [3] Liang, W., Lin, T. (1994). The characteristics of ionic wind and its effect on electrostatic precipitators. Aerosol Science and Technology, 20 (4), 330-344.

  • [4] Seok, J.P., Sang, S.K. (2000). Electrohydrodynamic flow and particle transport mechanism in electrostatic precipitators with cavity walls. Aerosol Science and Technology, 33 (3), 205–221.

  • [5] Mizeraczyk, J. et al. (2001). Measurements of the velocity field of the flue gas flow in an electrostatic precipitator model using PIV method. Journal of Electrostatics, 51–52, 272–277.

  • [6] Podlinski, J. et al. (2006). Electrohydrodynamic gas flow in a positive polarity wire-plate electrostatic precipitator and related dust particle collection efficiency. Journal of Electrostatics, 64 (3-4), 259–262.

  • [7] Podlinski, J. et al. (2006). 3D PIV measurements of the ehd flow patterns in a narrow electrostatic precipitator with wire-plate or wire-flocking electrodes. Czechoslovak Journal of Physics, 56 (Suppl. 2), B1009–B1016.

  • [8] Niewulis, A. et al. (2007). EHD flow measured by 3D PIV in a narrow electrostatic precipitator with longitudinal-to-flow wire electrode and smooth or flocking grounded plane electrode. Journal of Electrostatics, 65 (12), 728-734.

  • [9] Podlinski, J. et al. (2006). EHD flow in a wide electrode spacing spike–plate electrostatic precipitator under positive polarity. Journal of Electrostatics, 64 (7-9), 498-505.

  • [10] Chang, J.S. et al. (2006). On-set of EHD turbulence for cylinder in cross flow under corona discharges. Journal of Electrostatics, 64 (7-9), 569-573.

  • [11] Chang, J.S., Dekowski, J., Podlinski, J., Brocilo, D. (2005). Electrohydrodynamic gas flow regime map in a wire plate electrostatic precipitator. In Industry Applications Conference: Fourtieth IAS Annual Meeting, 2-6 October 2005, Hong Kong, China. IEEE, 2597-2600.

  • [12] Farnoosh, N., Adamiak, K., Castle, G.S.P. (2010). 3-D numerical analysis of EHD turbulent flow and mono-disperse charged particle transport and collection in a wire-plate ESP. Journal of Electrostatics, 68 (6), 513-522.

  • [13] Kawakami, H. et al. (2013). Per formance characteristics between horizontally and vertically oriented electrodes EHD ESP for collection of low-resistive diesel particulates. Journal of Electrostatics, 71 (6), 1117-1123.

  • [14] Li, Y. et al. (2015). CFD simulation of high-temperature effect on EHD characteristics in a wire-plate electrostatic precipitator. Chinese Journal of Chemical Engineering, 23 (4), 633-640.

  • [15] Raffel, M., Willert, C.E., Wereley, S., Kompenhans, J. (2007). Particle Image Velocimetry : A Practical Guide. Springer.

  • [16] IEEE. (2003). Technical committee, recommended international standard for dimensionless parameters used in electrohydrodynamics. IEEE Transactions on Dielectrics and Electrical Insulation, 10 (1), 3–6.

  • [17] Podlinski, J., Niewulis, A., Mizeraczyk, J., Atten, P. (2008). ESP performance for various dust densities. Journal of Electrostatics, 66 (5-6), 246-253.

  • [18] Lei, H., Wang, L., Wu, Z. (2008). EHD turbulent flow and Monte-Carlo simulation for particle charging and tracing in a wire-plate electrostatic precipitator. Journal of Electrostatics, 66 (3-4), 130–141.

  • [19] Zhao, L., Adamiak, K. (2008). Numerical simulation of the electrohydrodynamic flow in a single wire-plate electrostatic precipitator. IEEE Transactions on Industry Applications, 44 (3), 683-691.

  • [20] Leonard G.L., Mitchner, M., Self, S.A. (1983). An experimental study of the electrohydrodynamic flow in electrostatic precipitators. Journal of Fluid Mechanics, 127 (1), 123–140.

  • [21] Yabe, A., Mori, Y., Hijikata, K. (1978). EHD study of the corona wind between wire and plate electrodes. AIAA Journal, 16 (4), 340-345.

  • [22] Kallio, G.A., Stock, D.E. (1990). Flow visualization inside a wire-plate electrostatic precipitator. IEEE Transactions on Industry Applications, 26 (3), 503–514.


Journal + Issues