Journal of Statistical Physics

, Volume 83, Issue 5–6, pp 1067–1108 | Cite as

Metastable fluid flow described via a discrete-velocity coagulation-fragmentation model

  • M. Slemrod


A discrete-velocity Boltzmann model is introduced. It is based on two principles: (i) clusters of particles move in ℝ3 with seven fixed momenta; (ii) clusters may gain or lose particles according to the rules of Becker-Döring cluster equations. The model provides a kinetic representation of evaporation and condensation. The model is used to obtain macroscopic fluid equations which are valid into the metastable fluid regime,\(0 \leqslant \rho< \rho _s + O(\mu ^\sigma )\), where σ is any positive number, μ is the inelastic Knudsen number, andρ s is the saturation density.

Key Words

Boltzmann equation evaporation condensation cluster nucleation shock wave metastability 


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Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • M. Slemrod
    • 1
  1. 1.Center for the Mathematical SciencesUniversity of Wisconsin-MadisonMadison

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