Granular Flow Measurement in Silos Using Electrical Capacitance Tomography

Research output: Contribution to conferencePaperpeer-review

Abstract

The silo is a common container for granular materials storage. The discharge of solid particles from the outlet is a complicated dynamic process. It is affected by many factors, such as properties of the granular material, stress level, internal friction, moisture, and geometry of silos. Non-invasive and online monitoring of granular materials behaviour in the silo is a very demanding technique for many industries handling dynamic granular materials. Electrical capacitance tomography (ECT) images the internal permittivity distribution from external capacitance measurements. In this paper, the diameter of the discharging orifice determines the flow dynamics of the silo flow, including the concentration of the rice grains, change rate of the normalised permittivity, and the velocity of air phase. These are useful information for better visualisation and understanding the physics phenomena of the gravitational silo flow process. The experiment results can be used to validate the relevant computational simulations. This work could extend the application of ECT technique to more complicated two-phase flow measurement.
Original languageEnglish
Publication statusPublished - 2015
Event7th International Symposium on Process Tomography - Dresden, Germany
Duration: 1 Sep 20153 Sep 2015

Conference

Conference7th International Symposium on Process Tomography
CountryGermany
CityDresden
Period1/09/153/09/15

Keywords

  • Keywords ECT
  • Cross-correlation
  • Silo flow
  • Velocity measurement

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