Mixed Fluid Conditions: Capillary Phenomena

Handle URI:
http://hdl.handle.net/10754/625665
Title:
Mixed Fluid Conditions: Capillary Phenomena
Authors:
Santamarina, Carlos ( 0000-0001-8708-2827 ) ; Sun, Zhonghao
Abstract:
Mixed fluid phenomena in porous media have profound implications on soil-atmosphere interaction, energy geotechnology, environmental engineering and infrastructure design. Surface tension varies with pressure, temperature, solute concentration, and surfactant concentration; on the other hand, the contact angle responds to interfacial tensions, surface topography, invasion velocity, and chemical interactions. Interfaces are not isolated but interact through the fluid pressure and respond to external fields. Jumps, snap-offs and percolating wetting liquids along edges and crevices are ubiquitous in real, non-cylindrical porous networks. Pore- and macroscale instabilities together with pore structure variability-and-correlation favor fluid trapping and hinder recovery efficiency. The saturation-pressure characteristic curve is affected by the saturation-history, flow-rate, the mechanical response of the porous medium, and time-dependent reactive and diffusive processes; in addition, there are salient differences between unsaturation by internal gas nucleation and gas invasion. Capillary forces add to other skeletal forces in the porous medium and can generate open-mode discontinuities when the capillary entry pressure is high relative to the effective stress. Time emerges as an important variable in mixed-fluid conditions and common quasi-static analyses may fail to capture the system response.
KAUST Department:
KAUST, Thuwal, Kingdom of Saudi Arabia
Citation:
Santamarina JC, Sun Z (2017) Mixed Fluid Conditions: Capillary Phenomena. Poromechanics VI. Available: http://dx.doi.org/10.1061/9780784480779.010.
Publisher:
American Society of Civil Engineers
Journal:
Poromechanics VI
Conference/Event name:
6th Biot Conference on Poromechanics, Poromechanics 2017
Issue Date:
6-Jul-2017
DOI:
10.1061/9780784480779.010
Type:
Conference Paper
Sponsors:
Support for this research was provided by the KAUST endowment. Gabrielle E. Abelskamp edited the manuscript.
Additional Links:
http://ascelibrary.org/doi/10.1061/9780784480779.010
Appears in Collections:
Conference Papers

Full metadata record

DC FieldValue Language
dc.contributor.authorSantamarina, Carlosen
dc.contributor.authorSun, Zhonghaoen
dc.date.accessioned2017-10-03T12:49:32Z-
dc.date.available2017-10-03T12:49:32Z-
dc.date.issued2017-07-06en
dc.identifier.citationSantamarina JC, Sun Z (2017) Mixed Fluid Conditions: Capillary Phenomena. Poromechanics VI. Available: http://dx.doi.org/10.1061/9780784480779.010.en
dc.identifier.doi10.1061/9780784480779.010en
dc.identifier.urihttp://hdl.handle.net/10754/625665-
dc.description.abstractMixed fluid phenomena in porous media have profound implications on soil-atmosphere interaction, energy geotechnology, environmental engineering and infrastructure design. Surface tension varies with pressure, temperature, solute concentration, and surfactant concentration; on the other hand, the contact angle responds to interfacial tensions, surface topography, invasion velocity, and chemical interactions. Interfaces are not isolated but interact through the fluid pressure and respond to external fields. Jumps, snap-offs and percolating wetting liquids along edges and crevices are ubiquitous in real, non-cylindrical porous networks. Pore- and macroscale instabilities together with pore structure variability-and-correlation favor fluid trapping and hinder recovery efficiency. The saturation-pressure characteristic curve is affected by the saturation-history, flow-rate, the mechanical response of the porous medium, and time-dependent reactive and diffusive processes; in addition, there are salient differences between unsaturation by internal gas nucleation and gas invasion. Capillary forces add to other skeletal forces in the porous medium and can generate open-mode discontinuities when the capillary entry pressure is high relative to the effective stress. Time emerges as an important variable in mixed-fluid conditions and common quasi-static analyses may fail to capture the system response.en
dc.description.sponsorshipSupport for this research was provided by the KAUST endowment. Gabrielle E. Abelskamp edited the manuscript.en
dc.publisherAmerican Society of Civil Engineersen
dc.relation.urlhttp://ascelibrary.org/doi/10.1061/9780784480779.010en
dc.titleMixed Fluid Conditions: Capillary Phenomenaen
dc.typeConference Paperen
dc.contributor.departmentKAUST, Thuwal, Kingdom of Saudi Arabiaen
dc.identifier.journalPoromechanics VIen
dc.conference.date2017-07-09 to 2017-07-13en
dc.conference.name6th Biot Conference on Poromechanics, Poromechanics 2017en
dc.conference.locationParis, FRAen
kaust.authorSantamarina, Carlosen
kaust.authorSun, Zhonghaoen
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