Research Papers: Flows in Complex Systems

Influence of Applied Magnetic Field on a Wire-Plate Electrostatic Precipitators Under Multi-Field Coupling

[+] Author and Article Information
Jian-Ping Zhang

e-mail: jpzhanglzu@163.com

Jian-Xing Ren, Quan-Fei Ding

School of Energy and Mechanical Engineering,
Shanghai University of Electric Power,
Shanghai 200090, China

Helen Wu

School of Computing,
Engineering and Mathematics,
University of Western Sydney,
Penrith, NSW 2751, Australia

1Corresponding author.

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received September 10, 2012; final manuscript received April 5, 2013; published online June 5, 2013. Assoc. Editor: Shizhi Qian.

J. Fluids Eng 135(8), 081105 (Jun 05, 2013) (8 pages) Paper No: FE-12-1436; doi: 10.1115/1.4024197 History: Received September 10, 2012; Revised April 05, 2013

The aim of this work is to find an effective method to improve the collection efficiency of electrostatic precipitators (ESPs). A mathematic model of an ESP subjected to the external magnetic field was proposed. The model considered the coupled effects between the gas flow field, particle dynamic field and electromagnetic field. Particles following a Rosin-Rammler distribution were simulated under various conditions and the influence of the magnetic field density on the capture of fine particles was investigated. The collection efficiency and the escaped particle size distribution under different applied magnetic field intensities were discussed. Particle trajectories inside the ESP under aerodynamic and electromagnetic forces were also analyzed. Numerical results indicate that the collection efficiency increases with the increase of applied magnetic field. It was also found that a stronger applied magnetic field results in a larger particle deflection towards the dust collection plates. Furthermore, the average diameter of escaping particles decreases and the dispersion of dust particles with different sizes increases with the increasingly applied magnetic field. Finally, the average diameter decreases almost linearly with the magnetic field until it drops to a certain value. The model proposed in this work is able to obtain important information on the particle collection phenomena inside an industrial ESP under the applied magnetic field.

Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.


Schmid, H., and Vogel, L., 2003, “On the Modelling of the Particle Dynamics in Electro-Hydrodynamic Flow Fields: I. Comparison of Eulerian and Lagrangian Modeling Approach,” Powder Technol., 135–136, pp. 118–135. [CrossRef]
Schmid, H., 2003, “On the Modeling of the Particle Dynamics in Electro-Hydrodynamic Flow Fields: II. Influences of Inhomogeneities on Electrostatic Precipitation,” Powder Technol., 135–136, pp. 136–149. [CrossRef]
Varonos, A., Anagnostopoulos, J., and Bergeles, G., 2002, “Prediction of the Cleaning Efficiency of an Electrostatic Precipitator,” J. Electrost., 55(2), pp. 111–133. [CrossRef]
Nikas, K., Varonos, A., and Bergeles, G., 2005, “Numerical Simulation of the Flow and the Collection Mechanisms Inside a Laboratory Scale Electrostatic Precipitator,” J. Electrost., 63(5), pp. 423–443. [CrossRef]
Choi, B., and Fletcher, C., 1998, “Turbulent Particle Dispersion in an Electrostatic Precipitator,” Appl. Math. Model., 22(12), pp. 1009–1021. [CrossRef]
Nguyen, A., and Fletcher, C., 1999, “Particle Interaction with the Wall Surface in Two-Phase Gas Solid Particle Flow,” Int. J. Multiphase Flow, 25(1), pp. 139–154. [CrossRef]
Lee, B., Tu, J., and Fletcher, C., 2002, “On Numerical Modeling of Particle–Wall Impaction in Relation to Erosion Prediction: Eulerian Versus Lagrangian Method,” Wear, 252(3–4), pp. 179–188. [CrossRef]
Xu, D., Li, J., Wu, Y., Wang, L., Sun, D., Liu, Z., and Zhang, Y., 2003, “Discharge Characteristics and Applications for Electrostatic Precipitation of DC Corona With Spraying Discharge Electrodes,” J. Electrost., 57(3–4), pp. 217–224. [CrossRef]
Xu, D., Sheng, L. X., Wang, H. J., Sun, Y. H., Zhang, X. Y., and Mi, J. F., 2007, “Study of Magnetically Enhanced Corona Pre-Charger,” J. Electrost., 65(2), pp. 101–106. [CrossRef]
Zhang, J. P., Ding, Q. F., Dai, Y. X., and Ren, J. X., 2011, “Analysis of Collection Efficiency in Wire-Duct Electrostatic Precipitators Subjected to the Applied Magnetic Field,” IEEE Trans. Plasma Sci., 39(1), pp. 569–575. [CrossRef]
Suda, J. M., Ivancsy, T., Kiss, I., and Berta, I., 2006, “Complex Analysis of Ionic Wind in ESP Modeling,” The 10th International Conference on Electrostatic Precipitator, Australia.
Egli, W., Kogelschatz, U., Gerteisenb, E. A., and Gruberc, R., 1997, “3D Computation of Corona, Ion Induced Secondary Flows and Particle Motion in Technical ESP Configurations,” J. Electrost., 40–41, pp. 425–430. [CrossRef]
FLUENT 6.2 User's Guide, 2005, Fluent Inc., Lebanon, New Hampshire.
Maxey, R., and Riley, J., 1983, “Equation of Motion for a Small Rigid Sphere in an Nonuniform Flow,” Phys. Fluids, 26, pp. 883–889. [CrossRef]
Berlemont, A., Desjonqueres, P., and Gouesbet, G., 1990, “Particle Lagrangian Simulation in Turbulent Flows,” Int. J. Multiphase Flow, 16, pp. 19–34. [CrossRef]
Schmid, H., 1999, Zum Partikeltransport in Elektrischen Abscheidern, Shaker, Aachen, Germany.
Lei, H., Wang, L., and Wu, Z., 2008, “EHD Turbulent Flow and Monte-Carlo Simulation for Particle Charging and Tracing in a Wire-Plate Electrostatic Precipitator,” J. Electrost., 66(3–4), pp. 130–141. [CrossRef]
Nouri, H., and Zebboudj, Y., 2010, “Analysis of Positive Corona in Wire–to–Plate Electrostatic Precipitator,” Eur. Phys. J.: Appl. Phys., 49(1), pp. 1–9. [CrossRef]
Lei, H., 2006, “Charge–Current–Conservation Model for Calculating Electrical Conditions in a Wire-Plate Electrostatic,” IEEE Trans. Dielectr. Electr. Insul., 4(13), pp. 795–801.
Parker, K., Applied Electrostatic Precipitator ( Blackie, London, 1997).
Lawless, P., and Sparks, L., 1980, “A Mathematical Model for Calculating Effects of Back Corona in Wire-Duct Electrostatic Precipitators,” J. Appl. Phys., 51(1), pp. 242–256. [CrossRef]
Penney, G., and Matick, R., 1960, “Potentials in DC Corona Fields,” Trans. AIEE, 79(5), pp. 91–99. Available at http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6368550&url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel5%2F6367273%2F6368547%2F06368550.pdf%3Farnumber%3D6368550


Grahic Jump Location
Fig. 3

Two-dimensional computational model of a three-wire plate ESP

Grahic Jump Location
Fig. 2

Schematic diagram of multifield coupling inside an ESP

Grahic Jump Location
Fig. 6

Comparison of the predicted potential distribution with the experimental data in Ref. [22]: (a) from the plate to the midpoint between wires and (b) from the plate to the wire along the wire-plate line

Grahic Jump Location
Fig. 1

Schematic drawing of mechanism analysis on a wire-plate ESP under external magnetic field

Grahic Jump Location
Fig. 5

Computational mesh of the wire-plate ESP model

Grahic Jump Location
Fig. 4

Flow chart for the numerical calculation

Grahic Jump Location
Fig. 11

Statistical histogram of incident particles and trapped particles at u = 0.7 m/s: (a) B = 0.0 T, (b) B = 1.0 T, (c) B = 2.0 T, (d) B = 4.0 T

Grahic Jump Location
Fig. 7

Particle tracks under different applied magnetic field intensities (V0 = 46.2 kV, u = 0.7 m/s): (a) B = 0.0 T, (b) B = 1.0 T, (c) B = 3.0 T, (d) B = 4.0 T

Grahic Jump Location
Fig. 8

Average diameter of escaping particles versus applied magnetic field intensity (V0 = 46.2 kV, u = 0.7 m/s)

Grahic Jump Location
Fig. 9

Collection efficiency versus the operating voltage under different applied magnetic field intensities (u = 0.7 m/s)

Grahic Jump Location
Fig. 10

Average diameter of escaping particles versus the operating voltage under different applied magnetic field intensities (u = 0.7 m/s)




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In