Abstract
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 language | English (US) |
|---|---|
| Pages (from-to) | 825-834 |
| Number of pages | 10 |
| Journal | Journal of Porous Media |
| Volume | 18 |
| Issue number | 8 |
| DOIs | |
| State | Published - 2015 |
| Externally published | Yes |
Keywords
- Choked flow
- Compressible flow
- Gas acceleration
- Mass flux
- Pressure distribution
ASJC Scopus subject areas
- Modeling and Simulation
- Biomedical Engineering
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering