Shocks in sand flowing in a silo
We study the formation of shocks on the surface of a granular material draining through an orifice at the bottom of a quasi-two dimensional silo. At high flow rates, the surface is observed to deviate strongly from a smooth linear inclined profile giving way to a sharp discontinuity in the height of...
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| Veröffentlicht in: | arXiv.org 2001-10 |
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| creator | Samadani, Azadeh Mahadevan, L Kudrolli, A |
| description | We study the formation of shocks on the surface of a granular material draining through an orifice at the bottom of a quasi-two dimensional silo. At high flow rates, the surface is observed to deviate strongly from a smooth linear inclined profile giving way to a sharp discontinuity in the height of the surface near the bottom of the incline, the typical response of a choking flow such as encountered in a hydraulic jump in a Newtonian fluid like water. We present experimental results that characterize the conditions for the existence of such a jump, describe its structure and give an explanation for its occurrence. |
| doi_str_mv | 10.48550/arxiv.0110427 |
| format | Article |
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| subjects | Drainage Flow velocity Granular materials Hydraulic jump Newtonian fluids Orifices Two dimensional flow |
| title | Shocks in sand flowing in a silo |
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