Abstract
A new style of discharge process from a vertical open-top pipe with capillary outlet is reported. The outflux fluctuates greatly with time and the bulk condensed granular flow in the pipe shows stopandgo motion when the filling height is above a threshold. When the filling height falls towards the threshold, led by a transitional stage, the outflux and the bulk movement become much stable. The upper surface dropping velocity variation is measured. A heuristic theory is proposed to understand the stop- and-go motion and the transitional behavior
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Hu, M., Wu, Q., Kong, X. et al. Discharge oscillation of particles from a vertical pipe with capillary outlet. Chin.Sci.Bull. 50, 1076–1078 (2005). https://doi.org/10.1360/982005-177
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DOI: https://doi.org/10.1360/982005-177