Vertical dropshafts with tangential intake structures are often used in urban drainage systems to route surface flow into underground systems. Vortex driven by a inlet is the typical pattern vertical dropshaft. However, analytical solutions of key hydraulic transition from chute vortex have not been investigated, and theoretical guidelines dropshaft available. In present study, series proposed ...

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In this paper we review recent progress made to understand granular chutes flow using multi-scale modeling techniques. We introduce the discrete particle method (DPM) and explain how to construct continuum fields from discrete data in a way that is consistent with the macroscopic concept of mass and momentum conservation. We present a novel advanced contact detection method that is able of deal...