Gas expansioninduced acceleration effect of a highly compressible gas flow in porous media

Hailong Jiang, M. Chen, Y. Jin, Kangping Chen

Research output: Contribution to journalArticle

4 Scopus citations


Volume-expansion-induced gas acceleration effect in a highly compressible gas flow in porous media is studied. The importance of gas acceleration is quantified in terms of a dimensionless parameter; conditions under which gas acceleration effect need to be considered in the gas pressure profile and mass flux are identified. It is shown that when the Forchheimer drag is given, the effect of gas acceleration on the gas pressure profile and mass flux depend only on the dimensionless parameter representing the ratio between the gas acceleration and the Forchheimer drag. It is also shown that the Forchheimer drag has an insignificant effect on the outlet pressure in choked flows. The result of this analysis is successfully applied to published experimental data.

Original languageEnglish (US)
Pages (from-to)825-834
Number of pages10
JournalJournal of Porous Media
Issue number8
StatePublished - 2015
Externally publishedYes



  • Choked flow
  • Compressible flow
  • Gas acceleration
  • Mass flux
  • Pressure distribution

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics
  • Modeling and Simulation
  • Biomedical Engineering

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