Computational framework for the regularized 20-moment equations for non-equilibrium gas flows

S. Mizzi, X. J. Gu, D. R. Emerson*, R. W. Barber, J. M. Reese

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents a framework for solving the regularized 20-moment equations consisting of a set of transport-like governing equations, the required constitutive closure, re-casting of the equations in second-order partial derivative form and derivation of additional wall boundary conditions. Couette flow results reveal that good agreement occurs between the 20-moment equations and direct simulation Monte Carlo data.

Original languageEnglish
Pages (from-to)1433-1439
Number of pages7
JournalInternational Journal for Numerical Methods in Fluids
Volume56
Issue number8
DOIs
Publication statusPublished - 20 Mar 2008

Keywords

  • gas microfluidics
  • non-equilibrium gas flows
  • wall boundary conditions
  • method of moments
  • rarefied gas dynamics
  • non-equilibrium
  • extended hydrodynamics
  • numerical methods
  • diffusive transport
  • direct simulation Monte Carlo
  • DSMC

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