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Granular matter transport in vertical pipes : the influence of pipe outlet conditions on gravity-driven granular flowJaklič, Miha Tomaž ...Gravity transport of granular materials in vertical pipes is one of the most fundamental steps in bulk powder handling and processing. Presented study investigates powder flow characteristics in ... vertical pipes with open and closed outlets and condition of free powder fall. Powder flow of pharmaceutical grade powders was observed in transparent, vertical pipe model. Description of flow structures was performed. Powder volume flow rate, acceleration, and dilatation were quantified and correlated with powder properties. The results show that in pipes with a closed outlet the escaping air slows down the powder flow, resulting in a much slower flow than in pipes with an open outlet. A dense granular flow was detected in an open outlet condition, whereas in a closed outlet condition two concurrent flow regimes were observed: a slow moving, dense powder bed, and a fast dilute powder flow. Differences in flow regimes may promote segregation, with important implications to industrial processes.Source: Acta chimica slovenica. - ISSN 1318-0207 (Vol. 63, no. 1, 2016, str. 62-76)Type of material - article, component partPublish date - 2016Language - englishCOBISS.SI-ID - 4034929
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Jaklič, Miha Tomaž | 33366 |
Kočevar, Klemen | 16408 |
Srčič, Stanko | 09031 |
Dreu, Rok | 21455 |
Source: Personal bibliographies
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