uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Modeling of dense nonaqueous phase liquid entrapment and dissolution in variable aperture fractures
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
Colorado School of Mines. (Center for Experimental Study of Subsurface Environmental Processes)
2009 (English)In: Proceedings of TOUGH2 Symposium 2009, Lawrence Berkeley National Laboratory, Berkeley, California, 2009Conference paper, Published paper (Refereed)
Abstract [en]

This study investigates dense non-aqueous phase liquid (DNAPL) entrapment and dissolution in single, variable-aperture fractures. Log-normally distributed aperture fields with local permeabilities following the cubic law are assumed. Special attention is given to the capillary pressure-liquid saturation function to account for the specific drainage and wetting characteristics of fractures. DNAPL migration and immobilization is modeled by using the iTOUGH2/T2VOC models, and dissolution is simulated using the TMVOC model. Multiple realizations with different sets of aperture statistics and fracture inclination angles are analyzed.

The results suggest that the entrapment geometry of DNAPL in a heterogeneous fracture is highly sensitive to the aperture statistics. Larger correlation length or standard deviation produces a wider range of total entrapped DNAPL volume. Modeling of different fracture inclination angles reveals that gravity force plays an important role as well. Subsequent dissolution modeling shows that mass transfer will also be strongly influenced by the different DNAPL entrapment architectures corresponding to the different aperture correlation lengths and standard deviations.

Place, publisher, year, edition, pages
Lawrence Berkeley National Laboratory, Berkeley, California, 2009.
National Category
Oceanography, Hydrology, Water Resources Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-120367OAI: oai:DiVA.org:uu-120367DiVA: diva2:303222
Conference
TOUGH2 Symposium 2009
Available from: 2010-03-11 Created: 2010-03-11 Last updated: 2013-04-22Bibliographically approved

Open Access in DiVA

No full text

Authority records BETA

Yang, ZhibingNiemi, AuliFagerlund, Fritjof

Search in DiVA

By author/editor
Yang, ZhibingNiemi, AuliFagerlund, Fritjof
By organisation
LUVAL
Oceanography, Hydrology, Water ResourcesEarth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 821 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf