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math.AP2026
Hydrodynamic Limit of a Viscous BGK Model of the Boltzmann Equation
Gabriella Puppo, Thomas Rey, Tommaso Tenna
In this paper, we investigate a viscous regularization for the BGK model of the Boltzmann equation and its hydrodynamic limit. First, we establish rigorous convergence toward the v…
math.AP2025
Formal derivation of an isentropic two-phase flow model from the multi-species Boltzmann equation
Gabriella Puppo, Thomas Rey, Tommaso Tenna
Starting from the multi-species Boltzmann equation for a gas mixture, we propose the formal derivation of the isentropic two-phase flow model introduced in [Romenski, E., and Toro,…
math.AP2024
The Boltzmann equation for a multi-species inelastic mixture
Thomas Rey, Tommaso Tenna
A granular gas is a collection of macroscopic particles that interact through energy-dissipating collisions, also known as inelastic collisions. This inelasticity is characterized…