Abstracts

Davide Chiuchiu'
NiPS Laboratory, University of Perugia


Thermodynamics of the slow solutions to the gas-piston equations

A gas in a canister and compressed by a piston is a very simple systems which has been extensively studied since the birth of thermodynamics.
Despite that, gases and pistons still plays an important role in physics: they are one of the few system available in nonequilibrium thermodynamics where it's possible to derive analytical results. This is a key feature in this field as analytic formulas are fundamental to give insight on the open problems of dissipation and relaxation to equilibrium.
In this talk we pursue this line of research and introduce a new series-expansion to define the heat exchanged by the gas during a nonequilibrium transformation. The main advantages of our new expansion are the following: (1) it can be derived with few general assumptions, (2) all its terms are defined through an analytic recurrence relation and, (3) it can be computed to any desired order of precision.




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