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  • Countercurrent flow  (1)
  • miscible/immiscible displacement processes  (1)
  • 1990-1994  (2)
  • 1970-1974
  • 1940-1944
  • 1
    Electronic Resource
    Electronic Resource
    Stability of a stationary steam-water front in a porous medium (1994)
    Springer
    Transport in porous media 14 (1994), S. 1-21 
    Details
    ISSN: 1573-1634
    Keywords: Stationary steam-water front ; macroscopic boundary conditions ; miscible/immiscible displacement processes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Technology
    Notes: Abstract The instability of a plane front between two phases of the same fluid (steam and water) in a porous medium is considered. The configuration is taken to be initially stationary with the more dense phase overlying the less dense phase. The frontal region is assumed sharp, so that macroscopic boundary conditions can be utilized. This assumption precludes the existence of dispersion instabilities. The stabilizing influence of phrase transition as well as the implication of different macroscopic pressure boundary conditions on the stability of the front are discussed and illustrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00617025
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  • 2
    Electronic Resource
    Electronic Resource
    Steady-state countercurrent flow in one dimension (1991)
    Springer
    Transport in porous media 6 (1991), S. 173-182 
    Details
    ISSN: 1573-1634
    Keywords: Countercurrent flow ; capillarity ; relative permeability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Technology
    Notes: Abstract Two phase countercurrent steady-state flow through permeable media in one dimension is discussed. For steady-state countercurrent flow in water wet porous media, a saturation profile is predicted with the water saturation decreasing in the direction that the water phase is flowing. The de la Cruz and Spanos equations predict that the Muskat relative permeability curves for countercurrent flow will be less than the Muskat relative permeability curves for steady-state cocurrent flow. This result has immediate implications regarding the use of external drive techniques to determine relative permeabilities based on the Buckley-Leverett theory and Muskat's equations. These equations and current experimental evidence involving countercurrent flow indicate that Muskat's equations do not adequately describe the multiphase flow of immiscible fluids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00179279
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    Paper (German National Licenses)
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