Saturn's rings consist of a huge number of water ice particles, with a tiny addition of rocky
material. They form a flat disk, as the result of an interplay of angular momentum …

We derive from the first principles new hydrodynamic equations—Smoluchowski-Euler
equations for aggregation kinetics in space-inhomogeneous fluids with fluxes. Starting from …

The kinetic energy of a force-free granular gas decays monotonously due to inelastic
collisions of the particles. For a homogeneous granular gas of identical particles, the …

We investigate diffusion in polydisperse granular media. We derive the mean-squared
displacement of granular particles in a polydisperse granular gas in a homogeneous cooling …

Temperature-dependent Smoluchowski equations describe the ballistic agglomeration. In
contrast to the standard Smoluchowski equations for the evolution of cluster densities, with …

An efficient method for the fast solution of a new class of generalized Smoluchowski
equations is developed. In contrast to conventional Smoluchowski equations with constant …

We report surprising steady oscillations in aggregation-fragmentation processes. Oscillating
solutions are observed for the class of aggregation kernels K i, j= i ν j μ+ j ν i μ …

Granular gases are fascinating non-equilibrium systems with interesting features such as
spontaneous clustering and non-Gaussian velocity distributions. Mixtures of different …

A granular gas composed of monodisperse spherical particles was studied in microgravity
experiments in a drop tower. Translations and rotations of the particles were extracted from …

We study analytically and numerically the distribution of granular temperatures in granular
mixtures for different dissipation mechanisms of inelastic inter-particle collisions. Both driven …