Still water: dead zones and collimated ejecta from the impact of granular jets
arXiv:1304.4671 · doi:10.1103/PhysRevLett.111.168001
Abstract
When a dense granular jet hits a target, it forms a large dead zone and ejects a highly collimated conical sheet with a well-defined opening angle. Using experiments, simulations, and continuum modeling, we find that this opening angle is insensitive to the precise target shape and the dissipation mechanisms in the flow. We show that this surprising insensitivity arises because dense granular jet impact, though highly dissipative, is nonetheless controlled by the limit of perfect fluid flow.
arXiv comment5 pages, 5 figures, submitted to Physical Review Letters
References in corpus (15)
- A constitutive law for dense granular flows
- Rapid planetesimal formation in turbulent circumstellar discs
- Viscosity Information from Relativistic Nuclear Collisions: How Perfect is the Fluid Observed at RHIC?
- Undulatory Swimming in Sand: Subsurface Locomotion of the Sandfish Lizard
- Dynamics of drag and force distributions for projectile impact in a granular medium
- Shocks in supersonic sand
- Extracting the QGP viscosity from RHIC data -- a status report from viscous hydrodynamics
- High Velocity Dust Collisions: Forming Planetesimals in a Fragmentation Cascade with Final Accretion
- Collective behavior in a granular jet: Emergence of a liquid with zero surface-tension
- The Physics of Protoplanetesimal Dust Agglomerates II. Low Velocity Collision Properties
- Dust growth in protoplanetary disks - a comprehensive experimental/theoretical approach
- Velocity correlations in dense granular flows observed with internal imaging
- Simulation of granular jet: Is granular flow really a "perfect fluid?"
- Microscopic dissipation in a cohesionless granular jet impact
- An approximate hard sphere method for densely packed granular flows
Cited by in corpus (7)
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- Impact dynamics of granular jets with non-circular cross-sections
- Drag Law of Two Dimensional Granular Fluids
- Jet-induced jammed states of granular jet impacts
- Head-on collisions of dense granular jets
- Particle flows around an intruder