3 papers
cond-mat.soft2002
Spontaneous spirals in vibrated granular chains
R. E. Ecke, Z. A. Daya, M. K. Rivera +1
We present experimental measurements on the spontaneous formation of compact spiral structures in vertically-vibrated granular chains. Under weak vibration, when the chain is quasi…
nlin.CD2002
Athermodynamic Alignment in the Two-Dimensional Enstrophy Cascade
Xin Wang, Shiyi Chen, Robert E. Ecke +1
We study inertial-range statistics in the direct enstrophy cascade of two-dimensional turbulence via a numerical simulation of the forced Navier-Stokes equation. In particular, we…
cond-mat.soft2000
Knots and Random Walks in Vibrated Granular Chains
E. Ben-Naim, Z. A. Daya, P. Vorobieff +1
We study experimentally statistical properties of the opening times of knots in vertically vibrated granular chains. Our measurements are in good qualitative and quantitative agree…