granular materials that systems of dissipated the interacting microscopic particles
in the receipt known as a granular cows the individual the grain interact mainly by
instantaneous binary collisions
you to the and elastic nature of the collisions
the system loses and actually which is expressed by the decay end time of the
granular temperature defined as the mean internal free energy per particle
the evolution of forestry granular cast passes through several stages
after a fast kinetic machine
the system converges to its typical velocity distribution
which just rats to so-called homogeneous coding state
the temperature decreases to dissipate of collisions
while the system remains spatially homogeneous
nato local intensity fluctuations maybe to the spontaneous formation of clusters which may be camping
statement depending on the particle interactions
in our paper we are interested in the decay of temperature and the homogeneous coding
state
the coding of a granular gas depends on the particle interaction model of the system
then elastic nature of the correlations is characterized by a coefficient of mama restitution defined
as the ratio of the normal component of the relative velocities before and after condition
standard descriptions of granular classes consider constant coefficients of restitution eating to a queen behavior
known as have slow all of the scholastic particles using a different coding all
recently that has been shown in experiments as well as some simulations that the coefficient
of mama restitution describing the coalition of rough three years materials a stochastic nature that
can be described by a double exponential probability density
we see histograms of the coefficient of restitution
for different impact velocities obtained by experiments of particle impacts of rafts very kirkpatrick
we show by means of kinetic theory and simulation that the cooing maybe a what
these particles deviates from how slow as well as from the expression for with scholastic
particles
all voted the mediation from the scholastic cases very small
the stochastic nature has a clear impact on the system dynamics