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vol. 4, nr. 3 (2004)
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Application of electrical capacitance tomography for measurement of changes of bulk solid density in the process of silo discharge
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Maciej Niedostatkiewicz1, Zbigniew Chaniecki2, Jacek Tejchman1
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1 Faculty of Civil and Environmental Engineering, Gdańsk University of Technology ul. Narutowicza 11/12, 80-952 Gdańsk |
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2 Faculty of Electrotechnici Electronic, Technical University of £ód¼, Aleja Politechniki 11, 90-924 £ód¼ |
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vol. 4 (2004), nr. 3,
pp. 777-786
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abstract:
The objective of this paper is to present results of measurements of granular materials density changes during dynamic silo discharge using Electrical Capacitance Tomography. Tomography allows to observe the bahoviour of bulk solid density in horizontal cross-section during silo discharge, especially in the zone near the silo wall. The tests were carried out using 12-electrode sensors with a factor of length to silo diameter equal to 1. The sensors were located outside of the cylindrical silo model made of perspex at 2 different levels. The silo model was supported by a non-deformable steel frame. During the experiments, dry sand was used with various initial densities. The influence of the outlet diameter and wall roughness on the results was also investigated.
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keywords:
bulk solids, dynamic effects, bulk density, tomography
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original in:
Polish
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