The Hatano-Sasa equality: transitions between steady states in a granular gas.Report as inadecuate




The Hatano-Sasa equality: transitions between steady states in a granular gas. - Download this document for free, or read online. Document in PDF available to download.

1 Phys-ENS - Laboratoire de Physique de l-ENS Lyon

Abstract : An experimental study is presented, about transitions between Non-Equilibrium Steady States NESS in a dissipative medium. The core device is a small rotating blade that imposes cycles of increasing and decreasing forcings to a granular gas, shaken independently. The velocity of this blade is measured, subject to the transitions imposed by the periodic torque variation. \\ The Hatano-Sasa equality, that generalises the second principle of thermodynamics to NESS, is verified with a high accuracy a few $10^{-3}$, at different variation rates. \\ Besides, it is observed that the fluctuating velocity at fixed forcing follows a generalised Gumbel distribution. A rough evaluation of the mean free path in the granular gas suggests that it might be a correlated system, at least partially.





Author: Anne Mounier - Antoine Naert -

Source: https://hal.archives-ouvertes.fr/



DOWNLOAD PDF




Related documents