124 citations · 227 across the 6 of their papers we have counts for
6 papers
Coefficient of restitution for wet particles
Frank Gollwitzer, Ingo Rehberg, Christof A. Kruelle +1
The influence of a wetting liquid on the coefficient of restitution (COR) is investigated experimentally by tracing freely falling particles bouncing on a wet surface. The dependen…
Observation of Density Segregation inside Migrating Dunes
Christopher Groh, Ingo Rehberg, Christof A. Kruelle
Spatiotemporal patterns in nature, such as ripples or dunes, formed by a fluid streaming over a sandy surface show complex behavior despite their simple forms. Below the surface, t…
Coefficient of Restitution as a Fluctuating Quantity
Marina Montaine, Michael Heckel, Christof Kruelle +2
The coefficient of restitution of a spherical particle in contact with a flat plate is investigated as a function of the impact velocity. As an experimental observation we notice n…
Particle dynamics of a cartoon dune
Christopher Groh, Ingo Rehberg, Christof A. Kruelle
The spatio-temporal evolution of a downsized model for a desert dune is observed experimentally in a narrow water flow channel. A particle tracking method reveals that the migratio…
Reversing a granular flow on a vibratory conveyor
R. Grochowski, P. Walzel, M. Rouijaa +2
Experimental results are presented on the transport properties of granular materials on a vibratory conveyor. For circular oscillations of the shaking trough a non-monotonous depen…
Axial Sand-Water Segregation
A. P. J. Breu, C. A. Kruelle, I. Rehberg
A novel pattern forming instability in a mixture of a granular material and water in a horizontal rotating drum is experimentally investigated. The particles accumulate in radial s…