The fluid mechanics of electrostatic precipitators


Journal Article

The role of the electric body force in the generation of secondary flows and turbulence in precipitators is poorly understood at present, despite the fact that these disturbances are thought to be detrimental to precipitator performance. This paper undertakes a fundamental analysis of the problem using the Navier-Stokes and reduced Maxwell equations. It is shown that the rotational component of the current density causes vorticity production in the gas, and is therefore the source of secondary flows and turbulence. When the current density is irrotational, the electric body force causes a change in the pressure distribution but has no effect on the velocity field. Since the current density distribution is determined by the electrode geometry alone, the electrodes should be designed to minimize the rotational component of the current density and thus reduce gas flow disturbances. © 1985 Elsevier Science Publishing Co., Inc.

Full Text

Duke Authors

Cited Authors

  • Shaughnessy, EJ; Davidson, JH; Hay, JC

Published Date

  • January 1, 1985

Published In

Volume / Issue

  • 4 / 4

Start / End Page

  • 471 - 476

Electronic International Standard Serial Number (EISSN)

  • 1521-7388

International Standard Serial Number (ISSN)

  • 0278-6826

Digital Object Identifier (DOI)

  • 10.1080/02786828508959072

Citation Source

  • Scopus