On the Numerical Simulation of Rarefied Gas Flows in Micro-channels

Chariton Christou, Kokou Sename Enyonam Dadzie

Research output: Contribution to journalArticle

2 Citations (Scopus)
45 Downloads (Pure)

Abstract

Classical continuum methods break down for rarefied gas flows in micro-channels. Two non-continuum hydrodynamic models are investigated here: compressible Korteweg fluid-like and Bi-Velocity (Volume Diffusion) hydrodynamic models. The pressure driven rarefied gas flow in a rectangular micro-channel in the whole range of Knudsen number is numerically considered. The Korteweg model shows improved results in comparison with standard Navier–Stokes up to Knudsen number of unity. The Bi-Velocity method is found to allow a match between experiments and numerical results over the full range of Knudsen number.
Original languageEnglish
Article number35002
JournalJournal of Physics Communications
Volume2
Issue number3
DOIs
Publication statusPublished - 1 Mar 2018

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