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Journal Articles Ricerche di matematica Year : 2022

A kinetic model of polyatomic gas with resonant collisions

Abstract

We propose a kinetic model describing a polyatomic gas undergoing resonant collisions, in which the microscopic internal and kinetic energies are separately conserved during a collision process. This behaviour has been observed in some physical phenomena, for example in the collisions between selectively excited CO2 molecules. We discuss the model itself, prove the related H-theorem and show that, at the equilibrium, two temperatures are expected. We eventually present a numerical illustration of the model and its main properties.
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Dates and versions

hal-03629556 , version 1 (04-04-2022)

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Laurent Boudin, Alex Rossi, Francesco Salvarani. A kinetic model of polyatomic gas with resonant collisions. Ricerche di matematica, 2022, ⟨10.1007/s11587-022-00733-1⟩. ⟨hal-03629556⟩
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