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Article: A new model for predicting relative nonwetting phase permeability from soil water retention curves

TitleA new model for predicting relative nonwetting phase permeability from soil water retention curves
Authors
KeywordsClosed-form expression
Experimental evidence
Flow in porous media
Non-wetting
Permeability model
Issue Date2011
PublisherAmerican Geophysical Union.
Citation
Water Resources Research, 2011, v. 47 n. 8 How to Cite?
AbstractRelative permeability of the nonwetting phase in a multiphase flow in porous media is a function of phase saturation. Specific expressions of this function are commonly determined by combining soil water retention curves with relative nonwetting phase permeability models. Experimental evidence suggests that the relative permeability of the nonwetting phase can be significantly overestimated by the existing relative permeability models. A new model for the prediction of relative nonwetting phase permeability from soil water retention curves is proposed in this paper. A closed form expression can be obtained in combination with soil water retention curves. The model is mathematically simple and can easily and efficiently be implemented in numerical models of multiphase flow processes in porous media. The predicting capability of the proposed model is contrasted with well-supported models by comparing the measured and predicted relative air permeability data for 11 soils, representing a wide range of soil textures, from sand to silty clay loam. In most of the cases the proposed model improves the agreement between the predicted relative air permeability and the measured data. Copyright 2011 by the American Geophysical Union.
Persistent Identifierhttp://hdl.handle.net/10722/139157
ISSN
2015 Impact Factor: 3.792
2015 SCImago Journal Rankings: 2.661
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of the Hong Kong Special Administrative Region, ChinaHKU 701908P
Funding Information:

The authors thank the reviewers for their insightful comments. This research was supported by the Research Grants Council of the Hong Kong Special Administrative Region, China (HKU 701908P).

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorKuang, Xen_HK
dc.contributor.authorJiao, JJen_HK
dc.date.accessioned2011-09-23T05:46:08Z-
dc.date.available2011-09-23T05:46:08Z-
dc.date.issued2011en_HK
dc.identifier.citationWater Resources Research, 2011, v. 47 n. 8en_HK
dc.identifier.issn0043-1397en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139157-
dc.description.abstractRelative permeability of the nonwetting phase in a multiphase flow in porous media is a function of phase saturation. Specific expressions of this function are commonly determined by combining soil water retention curves with relative nonwetting phase permeability models. Experimental evidence suggests that the relative permeability of the nonwetting phase can be significantly overestimated by the existing relative permeability models. A new model for the prediction of relative nonwetting phase permeability from soil water retention curves is proposed in this paper. A closed form expression can be obtained in combination with soil water retention curves. The model is mathematically simple and can easily and efficiently be implemented in numerical models of multiphase flow processes in porous media. The predicting capability of the proposed model is contrasted with well-supported models by comparing the measured and predicted relative air permeability data for 11 soils, representing a wide range of soil textures, from sand to silty clay loam. In most of the cases the proposed model improves the agreement between the predicted relative air permeability and the measured data. Copyright 2011 by the American Geophysical Union.en_HK
dc.languageengen_US
dc.publisherAmerican Geophysical Union.-
dc.relation.ispartofWater Resources Researchen_HK
dc.rightsWater resources research. Copyright © American Geophysical Union.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectClosed-form expression-
dc.subjectExperimental evidence-
dc.subjectFlow in porous media-
dc.subjectNon-wetting-
dc.subjectPermeability model-
dc.titleA new model for predicting relative nonwetting phase permeability from soil water retention curvesen_HK
dc.typeArticleen_HK
dc.identifier.emailJiao, JJ:jjiao@hku.hken_HK
dc.identifier.authorityJiao, JJ=rp00712en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1029/2011WR010728en_HK
dc.identifier.scopuseid_2-s2.0-80052049851en_HK
dc.identifier.hkuros193812en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80052049851&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume47en_HK
dc.identifier.issue8en_HK
dc.identifier.eissn1944-7973-
dc.identifier.isiWOS:000294127800002-
dc.publisher.placeUnited Statesen_HK
dc.relation.projectSubsurface airflow induced by pumping tests-
dc.identifier.scopusauthoridKuang, X=36514932200en_HK
dc.identifier.scopusauthoridJiao, JJ=7102382963en_HK

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