Reference : Effect of an electric field on an intermittent granular flow
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/83656
Effect of an electric field on an intermittent granular flow
English
Mersch, Eric mailto [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Lumay, Geoffroy mailto [Université de Liège - ULg > Département de physique > Physique statistique >]
Boschini, Frédéric mailto [Université de Liège - ULg > Département de chimie (sciences) > Plateforme APTIS >]
Vandewalle, Nicolas mailto [Université de Liège - ULg > Département de physique > Physique statistique >]
2010
Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics
American Physical Society
81
041309
Yes (verified by ORBi)
International
1539-3755
1550-2376
College Park
MD
[en] granular materials ; electric field ; flow
[en] Granular gravity driven flows of glass beads have been observed in a silo with a flat bottom. A dc high electric field has been applied perpendicularly to the silo to tune the cohesion. The outlet mass flow has been measured. An image subtraction technique has been applied to visualize the flow geometry and a spatiotemporal analysis of the flow dynamics has been performed. The outlet mass flow is independent of voltage, but a transition from funnel flow to rathole flow is observed. This transition is of probabilistic nature and an intermediate situation exists between the funnel and the rathole situations. At a given voltage, two kinds of flow dynamics can occur: a continuous flow or an intermittent flow. The electric field increases the probability to observe an intermittent flow.
GRASP
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/83656

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