Granular flows down inclined channels with a strain-rate dependent friction coefficient. Part I: Non-cohesive materials |
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Authors: | Alain de Ryck Renaud Ansart John A Dodds |
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Affiliation: | (1) école des Mines d’Albi, UMR CNRS 2392, Route de Teillet, 81000 Albi, France |
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Abstract: | The flow of a granular material down an incline of finite width with a strain-rate dependent coefficient of friction and a
conical yield criterion is semi-analytically obtained using a characteristic method for flows on a deep layer of grains. This
analysis leads to a flow field with three distinct zones: a Bagnold-flow zone below the free surface, a dead-zone and a matching
zone between the two, linked to slippage at the wall. A good agreement between the computed flow field and experimental data
is obtained. |
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Keywords: | Granular materials Surface flows |
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