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TitleFlow mode characterization in a one metre diameter rotating drum
Publication TypeJournal Article
Year of Publication2006
AuthorsDavies, C.E., Jones J.R., Hussein K., Fiévez S., and Tallon S.J.
JournalDevelopments in Chemical Engineering and Mineral Processing
Pagination135 - 141
Date Published2006
ISSN09691855 (ISSN)
KeywordsCharacterization, Flow mode characterization, FLOW OF FLUIDS, Flow regimes, particle motion, Rotating drum, Rotating machinery
AbstractA newly developed instrument for characterising flow behaviour in a rotating drum senses particle motion with a load cell positioned under a pivoted framework that holds a 130 mm drum. Changes from the slumping regime to the rolling regime have been correlated with decreasing variance of the load signal for an increasing rotation rate. This paper extends earlier work to investigate the validity of applying results obtained in a small drum to large-scale equipment. Load cell signals from equipment with a drum of 1 metre diameter, constructed with the same design basis as the 130 mm characterisation instrument, were digitally filtered to remove noise believed to be associated with vibration of the framework, and also frequencies demonstrated to arise from the drive train. As with the 130 mm equipment, decreasing avalanching activity was found to be associated with decreasing variance. Bed profiles obtained from digital video images were consistent with the observed flow regimes.

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