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 journalArticlepeer-review

3 Scopus citations


The use of a woven wire-mesh screen as part of a flooded-bed dust-scrubbing system is very 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 formulas 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
Pages (from-to)1169-1177
Number of pages9
JournalMining, Metallurgy and Exploration
Issue number6
StatePublished - Dec 1 2019

Bibliographical note

Funding Information:
Funding for this research was provided by the Alpha Foundation for the Improvement of Mine Safety and Health, Inc. (grant number AFC113-10).

Publisher Copyright:
© 2019, Society for Mining, Metallurgy & Exploration Inc.


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

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Chemistry (all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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