894 citations · 3.8k across the 59 of their papers we have counts for
17 papers · 1 filter
Event-driven Molecular Dynamics of Soft Particles
Patric Mueller, Thorsten Poeschel
The dynamics of dissipative soft-sphere gases obeys Newton's equation of motion which are commonly solved numerically by (force-based) Molecular Dynamics schemes. With the assumpti…
Oblique Impact of Frictionless Spheres: On the Limitations of Hard Sphere Models for Granular Dynamics
Patric Mueller, Thorsten Poeschel
When granular systems are modeled by frictionless hard spheres, particle-particle collisions are considered as instantaneous events. This implies that while the velocities change a…
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…
Translations and Rotations are correlated in Granular Gases
Nikolai V. Brilliantov, Thorsten Poeschel, W. Till Kranz +1
In a granular gas of rough particles the axis of rotation is shown to be correlated with the translational velocity of the particles. The average relative orientation of angular an…
Kinetic Integrals in the Kinetic Theory of dissipative gases
Thorsten Poeschel, Nikolai V. Brilliantov
The kinetic theory of gases, including Granular Gases, is based on the Boltzmann equation. Many properties of the gas, from the characteristics of the velocity distribution functio…
Synchronization effects in the dynamical behavior of elevators
Thorsten Poeschel, Jason A. C. Gallas
We simulate the dynamical behavior of M elevators serving N floors of a building in which a Poisson distribution of persons call elevators. Our simulation reproduces the jamming ef…
Guessing probability distributions from small samples
Thorsten Poeschel, Werner Ebeling, Helge Rose
We propose a new method for the calculation of the statistical properties, as e.g. the entropy, of unknown generators of symbolic sequences. The probability distribution p(k) of th…
A Statistical Approach to Vehicular Traffic
Jan Freund, Thorsten Poeschel
A two-dimensional cellular automaton is introduced to model the flow and jamming of vehicular traffic in cities. Each site of the automaton represents a crossing where a finite num…
Avalanche statistics of sand heaps
Volkhard Buchholtz, Thorsten Poeschel
Large scale computer simulations are presented to investigate the avalanche statistics of sand piles using molecular dynamics. We could show that different methods of measurement l…
Swirling Granular Matter: From Rotation to Reptation
Michael A. Scherer, Volkhard Buchholtz, Thorsten Poeschel +1
A novel effect in a granular material under swirling motion of the container is presented. At low packing densities the material rotates in the same direction as the swirling motio…
Finite-sample frequency distributions originating from an equiprobability distribution
Thorsten Poeschel, Jan A. Freund
Given an equidistribution for probabilities p(i)=1/N, i=1..N. What is the expected corresponding rank ordered frequency distribution f(i), i=1..N, if an ensemble of M events is dra…
Velocity distribution in granular gases of viscoelastic particles
Nikolai V. Brilliantov, Thorsten Poeschel
The velocity distribution in a homogeneously cooling granular gas has been studied in the viscoelastic regime when the restitution coefficient of colliding particles depends on the…
Deviation from Maxwell Distribution in Granular Gases with Constant Restitution Coefficient
Nikolai V. Brilliantov, Thorsten Poeschel
We analyze the velocity distribution function of force-free granular gases in the regime of homogeneous cooling when deviations from the Maxwellian distribution may be accounted on…
Coefficient of restitution of colliding viscoelastic spheres
Rosa Ramirez, Thorsten Poeschel, Nikolai V. Brilliantov +1
We perform a dimension analysis for colliding viscoelastic spheres to show that the coefficient of normal restitution depends on the impact velocity g as ε=1-γ_1g^{1/5}+γ_2g^{2…
Self-diffusion in granular gases
Nikolai V. Brilliantov, Thorsten Poeschel
The coefficient of self-diffusion for a homogeneously cooling granular gas changes significantly if the impact-velocity dependence of the restitution coefficient is taken into…
Coefficient of normal restitution of viscous particles and cooling rate of granular gases
Thomas Schwager, Thorsten Poeschel
We investigate the cooling rate of a gas of inelastically interacting particles. When we assume velocity dependent coefficients of restitution the material cools down slower than w…
Onset of fluidization in vertically shaken granular material
Thorsten Poeschel, Thomas Schwager, Clara Saluena
When granular material is shaken vertically one observes convection, surface fluidization, spontaneous heap formation and other effects. There is a controversial discussion in lite…