Influence of wettability on constitutive relations and its role in upscaling

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Description

The lattice Boltzmann (LB) method is applied to simulating multifluid flow in porous media at sub-pore resolution to determine constitutive behaviors. The authors address the importance of the LB technique for identifying process based constitutive relationships, and demonstrate its application through analysis of the influence of wettability on interfacial areas and constitutive relationships. Porous media surface wettability is varied from uniformly strongly wetted by the resident fluid through strongly wetted by the displacing fluid. Spatially variable wettability is also demonstrated. Primary imbibition and drainage displacements are run, and interfacial areas (IFA) as a function of time are determined and compared. ... continued below

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9 p.

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Soll, W. E.; Gray, W. G. & Tompson, A. F. B. July 1, 1998.

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Authors

  • Soll, W. E. Los Alamos National Lab., NM (United States). Earth and Environmental Sciences
  • Gray, W. G. Univ. of Notre Dame, IN (United States). Dept. of Civil Engineering and Geological Sciences
  • Tompson, A. F. B. Lawrence Livermore National Lab., CA (United States). Earth Sciences Div.

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  • Los Alamos National Laboratory
    Publisher Info: Los Alamos National Lab., Earth and Environmental Sciences, NM (United States)
    Place of Publication: New Mexico

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Description

The lattice Boltzmann (LB) method is applied to simulating multifluid flow in porous media at sub-pore resolution to determine constitutive behaviors. The authors address the importance of the LB technique for identifying process based constitutive relationships, and demonstrate its application through analysis of the influence of wettability on interfacial areas and constitutive relationships. Porous media surface wettability is varied from uniformly strongly wetted by the resident fluid through strongly wetted by the displacing fluid. Spatially variable wettability is also demonstrated. Primary imbibition and drainage displacements are run, and interfacial areas (IFA) as a function of time are determined and compared. Results indicate that wettability is an important factor in displacement behavior and resulting interfacial area. Primary imbibition in a strongly wet material under capillary dominated flows produces film flow, resulting in high IFAs that decrease with increasing saturation and viscous forces. Primary drainage produces initially high IFA that decreases slightly with increasing saturation or pressure drop. Surfaces with spatially variable wetting can have a strong influence on resulting fluid distributions and fluid flow.

Physical Description

9 p.

Notes

OSTI as DE98003463

Source

  • 12. international conference on computational methods in water resources, Heraklion (Greece), 15-19 Jun 1998

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  • Other: DE98003463
  • Report No.: LA-UR--98-570
  • Report No.: CONF-980670--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 663379
  • Archival Resource Key: ark:/67531/metadc704039

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Creation Date

  • July 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • Nov. 3, 2016, 1:34 p.m.

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Soll, W. E.; Gray, W. G. & Tompson, A. F. B. Influence of wettability on constitutive relations and its role in upscaling, article, July 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc704039/: accessed April 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.