The measurement of interface velocity in solid-liquid slugging fluidised beds

Marco Cartesegna, Marco Fossa, Renzo Di Felice

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A new experimental apparatus based on conductivity measurements has been developed to measure liquid and solid phase volume fractions in fluidised suspensions. The device provides a measurement of the instantaneous values of volume fractions: this characteristic has been used here to estimate the velocity at which voidage discontinuities travel in a solid-liquid slugging fluidised suspension. The proposed method is based on the analysis of the rate of change of the electrical signal collected from various sensors placed along the fluidising column. The present work has verified the applicability of the new algorithm; measured voidage discontinuity velocities (i.e. the velocity of the interface separating dense and lean regions in the slugging suspensions) are reported and discussed in the light of existing fluid dynamic theories on the behaviour of such suspensions.

Original languageEnglish
Pages (from-to)37-44
Number of pages8
JournalExperimental Thermal and Fluid Science
Volume28
Issue number1
DOIs
Publication statusPublished - Dec 2003
Externally publishedYes

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Suspensions
Volume fraction
Liquids
Fluid dynamics
Sensors

Keywords

  • Conductivity measurements
  • Fluidised beds
  • Interface velocity
  • Slugging regime

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

The measurement of interface velocity in solid-liquid slugging fluidised beds. / Cartesegna, Marco; Fossa, Marco; Di Felice, Renzo.

In: Experimental Thermal and Fluid Science, Vol. 28, No. 1, 12.2003, p. 37-44.

Research output: Contribution to journalArticle

Cartesegna, Marco ; Fossa, Marco ; Di Felice, Renzo. / The measurement of interface velocity in solid-liquid slugging fluidised beds. In: Experimental Thermal and Fluid Science. 2003 ; Vol. 28, No. 1. pp. 37-44.
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