Abstract
For spouted beds, the maximum pressure drop on startup is very much greater than the constant value found once spouting has commenced. In the present work, insight into physical mechanisms is sought. Maximum pressure drop occurred prior to major particle movement,whilst it had been found previously that this peak occurred after cavity formation. This is probably due to differences in inlet design. On decreasing the gas flow, it is argued that the reduced pressure drop following spout collapse is a consequence of a change in stress state of the granular material. Altered wall roughness had no effect; incidentally it also had little effect on spout diameter.
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© 1980 Plenum Press, New York
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McNab, G.S., Bridgwater, J. (1980). Spout Formation and Collapse in Rough and Smooth Walled Beds. In: Grace, J.R., Matsen, J.M. (eds) Fluidization. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-1045-7_25
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DOI: https://doi.org/10.1007/978-1-4684-1045-7_25
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-1047-1
Online ISBN: 978-1-4684-1045-7
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