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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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Preprints, Working Papers, ...
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https://hal.archives-ouvertes.fr/hal-03629556
Contributor : Francesco Salvarani Connect in order to contact the contributor
Submitted on : Monday, April 4, 2022 - 2:17:15 PM
Last modification on : Friday, April 8, 2022 - 3:32:38 AM

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  • HAL Id : hal-03629556, version 1

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Laurent Boudin, Alex Rossi, Francesco Salvarani. A kinetic model of polyatomic gas with resonant collisions. 2022. ⟨hal-03629556⟩

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