Empirical formulae for determining pressure drop across a 20-layer flooded-bed scrubber screen

Sampurna Arya, Thomas Novak, Kozo Saito, Adam Levy, Joseph Sottile

Research output: Contribution to specialist publicationArticle

5 Scopus citations


The use of a woven wire-mesh screen as part of a flooded- bed dust-scrubbing system is popular in the underground coal mining industry. It is used in combination with a demister (mist eliminator) to remove dust from the dust-laden air. A study was conducted to measure the pressure drop across a flooded-bed, wire-mesh screen at different airflow rates in one-phase (dry) and two-phase (wet) conditions. Two empirical relationships between pressure drop and air velocity were developed for dry and wet conditions, respectively. In both cases, the form of the empirical relationships was found to be similar to relationships given by Sabri Ergun for high velocity, non-Darcy, single- and multi-phase flow through porous media. The experiments were repeated on a reduced-scale model of the wire-mesh screen, and the pressure-velocity relationships obtained from the full-scale prototype experiments were tested. The test results show validation of the full-scale empirical formulae on the small-scale model with an insignificant variation. This paper presents the empirical equations for pressure drop across the wire-mesh screen in dry and wet conditions. Researchers can use these equations as a tool to predict total pressure drops for wire-mesh screens of different scale sizes.

Original languageEnglish
Number of pages3
Specialist publicationMining Engineering
StatePublished - 2019

Bibliographical note

Publisher Copyright:
© 2019 Society for Mining, Metallurgy and Exploration. All rights reserved.


  • Dust control
  • Dust scrubber
  • Flooded-bed scrubber
  • Prototype
  • Scale model
  • Wire-mesh screen

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology


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