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 DNAPL spreading in heterogeneous variable aperture fractures
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Air and Water Science.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Air and Water Science.
Colorado School of Mines.
2009 (English)In: Geophysical Research Abstract Vol. 11, EGU General Assembly 2009, 2009, 10221- p.Conference paper, Published paper (Other academic)
Abstract [en]

The design of effective remediation schemes for dense non-aqueous phase liquids (DNAPLs) in fractured rocksrequires a fundamental understanding of their multiphase spreading and dissolution processes in these highly heterogeneoussystems. Stochastic heterogeneity is present both at the level of individual fractures and at the levelof fracture networks, and the processes of DNAPL spreading in these systems are not well understood. This workinvestigates the multiphase spreading and immobilization of chlorinated solvents in variable aperture single fracturesby means of numerical modeling. Multiphase simulation code iTOUGH2/T2VOC is used. Log-normallydistributed and spatially correlated aperture fields are generated and locally valid cubic law is assumed to relatethe variable aperture to the variable permeability. Hysteretic Brooks-Corey-Burdine type of capillary pressuresaturation-relative permeability relationships obtained by experimental study of Reitsma and Kueper (Water ResourcesResearch, 30 (1994): 865-878) are adopted and scaled with regard to interfacial tensions and local permeabilityaccording to Leverett J function. The effect of fracture aperture characteristics and correlation length aswell as fracture dipping angle on DNAPL spreading pathway and residual distribution is examined. Implicationsfor upscaling the observed behavior to fracture network systems are discussed.

Place, publisher, year, edition, pages
2009. 10221- p.
National Category
Oceanography, Hydrology, Water Resources
Research subject
Hydrology
Identifiers
URN: urn:nbn:se:uu:diva-120405OAI: oai:DiVA.org:uu-120405DiVA: diva2:303281
Conference
EGU General Assembly 2009, Vienna, Austria 19 – 24 April 2009
Available from: 2010-03-11 Created: 2010-03-11 Last updated: 2013-04-29Bibliographically approved

Open Access in DiVA

No full text

Other links

http://meetings.copernicus.org/egu2009, p.10221

Authority records BETA

Yang, ZhibingNiemi, AuliFagerlund, Fritjof

Search in DiVA

By author/editor
Yang, ZhibingNiemi, AuliFagerlund, Fritjof
By organisation
Air and Water ScienceDepartment of Earth Sciences
Oceanography, Hydrology, Water Resources

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 833 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