Monday, July 9, 2012

1207.1658 (Andrés Santos et al.)

Relative Entropy of a Freely Cooling Granular Gas    [PDF]

Andrés Santos, Gilberto M. Kremer
The time evolution and stationary values of the entropy per particle of a homogeneous freely cooling granular gas, relative to the maximum entropy consistent with the instantaneous translational and rotational temperatures, is analyzed by means of a Sonine approximation involving fourth-degree cumulants. The results show a rich variety of dependencies of the relative entropy on time and on the coefficients of normal and tangential restitution, including a peculiar behavior in the quasi-smooth limit.
View original: http://arxiv.org/abs/1207.1658

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