Relative Entropy of a Freely Cooling Granular Gas

Andrés Santos; Gilberto M. Kremer

doi:10.1063/1.4769657

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arXiv · 1207.1658

Relative Entropy of a Freely Cooling Granular Gas

Andrés Santos·Gilberto M. Kremer

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Abstract

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.

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Andrés Santos, Gilberto M. Kremer. 2012-07-06. Relative Entropy of a Freely Cooling Granular Gas. https://doi.org/10.1063/1.4769657

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