Change search
ReferencesLink to record
Permanent link

Direct link
Stochastic analysis of early tracer arrival in a segmented fracture pathway
KTH, Superseded Departments, Land and Water Resources Engineering.
2001 (English)In: Water resources research, ISSN 0043-1397, E-ISSN 1944-7973, Vol. 37, no 6, 1669-1680 p.Article in journal (Refereed) Published
Abstract [en]

A stochastic model for transport and retention in fractured rock is proposed as an alternative to more elaborate numerical simulations. Contaminants are transported by advection through a series of n rock fractures. The microscopic processes of matrix diffusion and sorption act together to retain contaminants in the host rock. The transport pathway is characterized by large-scale fluctuations in the advection velocity caused by spatial variability in the fracture attributes along the pathway. The moments of the time of arrival of an initial solute pulse are related in a generic way to the joint distribution of fracture aperture and length. These moments are controlled primarily by a dimensionless retention parameter that incorporates all the deterministic model parameters and by correlation between fracture length and aperture. The results show that a systematic bias in the predicted contaminant transport can be introduced by neglecting spatial variability in fracture attributes. The relative contributions of fracture-to-fracture variability and within-fracture variability are also explored. The proposed stochastic methodology can be merged with relatively simple numerical simulations to broaden the applicability.

Place, publisher, year, edition, pages
2001. Vol. 37, no 6, 1669-1680 p.
Keyword [en]
fluid-flow, 3-dimensional networks, reactive transport, porous formations, matrix diffusion, geological media, solute transport, immiscible flow, single fracture, mass-transport
URN: urn:nbn:se:kth:diva-20650ISI: 000168845200011OAI: diva2:339346
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Cvetkovic, Vladimir
By organisation
Land and Water Resources Engineering
In the same journal
Water resources research

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 22 hits
ReferencesLink to record
Permanent link

Direct link