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Heat conductivity by a shared piston

par Van Den Broeck, Christian ;Kestemont, Edouard ;Malek-Mansour, Mohammad-Ali
Référence Europhysics Letters, 56, 6, page (771-777)
Publication Publié, 2001

Article révisé par les pairs

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Résumé :

We study the heat transfer between two reservoirs, filled with hard disks (mass m) at different temperature, resulting from the collisions with a common piston (mass M). The predictions of a linear Langevin equation are found to be in very good agreement with molecular-dynamics simulations for both a dense Enskog and a dilute Boltzmann gas for a mass ratio M/m as low as 10. Results based on the Boltzmann equation and on an exactly solvable one-dimensional model describe well the case M = m of equal masses.