Details
| Original language | English |
|---|---|
| Pages (from-to) | 1217-1231 |
| Number of pages | 15 |
| Journal | Advances in water resources |
| Volume | 27 |
| Issue number | 12 |
| Publication status | Published - 17 Nov 2004 |
| Externally published | Yes |
Abstract
Experiments on the immiscible displacement of water by air were performed in two horizontal artificial open rough-walled fractures with different correlation structures. The aperture field of the first fracture has a Gaussian variogram with a finite correlation length, while that of the second one has a power-law variogram, for which no finite correlation length can be assigned. We simulated the displacement process using an invasion percolation model, which takes the in-plane curvature of the interface between water and air into account. The correlation structure of the aperture field has no effect on the irregularity of the shape of the air clusters. However, the correlation structure in combination with the in-plane curvature influences the density of the air clusters and thus has an impact on characteristic properties of the flow. We analyze the model parameters and properties with respect to the fracture properties. The stochastic average of the air clusters for models with different curvature numbers and fields with different correlation lengths is then calculated in order to analyze their influence on continuum approach models.
Keywords
- Artificial fractures, Correlation, Drainage, Invasion percolation, Open fracture flow
ASJC Scopus subject areas
- Environmental Science(all)
- Water Science and Technology
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Advances in water resources, Vol. 27, No. 12, 17.11.2004, p. 1217-1231.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Experimental and theoretical investigations of drainage in horizontal rough-walled fractures with different correlation structures
AU - Neuweiler, Insa
AU - Sorensen, Ivan
AU - Kinzelbach, Wolfgang
N1 - Funding information: We gratefully acknowledge the financial support of the Swiss National Science Foundation under project no 21-52224.97 and of the European Community programme Improving Human Research Potential and the Socio-economic Knowledge Base under contract number HPMF-CT-2000-00948. We thank Hui Chen Su for the design of the fracture models and Toni Blunschi for their realization. Also, we thank Olaf Cirpka for the discussion of the manuscript.
PY - 2004/11/17
Y1 - 2004/11/17
N2 - Experiments on the immiscible displacement of water by air were performed in two horizontal artificial open rough-walled fractures with different correlation structures. The aperture field of the first fracture has a Gaussian variogram with a finite correlation length, while that of the second one has a power-law variogram, for which no finite correlation length can be assigned. We simulated the displacement process using an invasion percolation model, which takes the in-plane curvature of the interface between water and air into account. The correlation structure of the aperture field has no effect on the irregularity of the shape of the air clusters. However, the correlation structure in combination with the in-plane curvature influences the density of the air clusters and thus has an impact on characteristic properties of the flow. We analyze the model parameters and properties with respect to the fracture properties. The stochastic average of the air clusters for models with different curvature numbers and fields with different correlation lengths is then calculated in order to analyze their influence on continuum approach models.
AB - Experiments on the immiscible displacement of water by air were performed in two horizontal artificial open rough-walled fractures with different correlation structures. The aperture field of the first fracture has a Gaussian variogram with a finite correlation length, while that of the second one has a power-law variogram, for which no finite correlation length can be assigned. We simulated the displacement process using an invasion percolation model, which takes the in-plane curvature of the interface between water and air into account. The correlation structure of the aperture field has no effect on the irregularity of the shape of the air clusters. However, the correlation structure in combination with the in-plane curvature influences the density of the air clusters and thus has an impact on characteristic properties of the flow. We analyze the model parameters and properties with respect to the fracture properties. The stochastic average of the air clusters for models with different curvature numbers and fields with different correlation lengths is then calculated in order to analyze their influence on continuum approach models.
KW - Artificial fractures
KW - Correlation
KW - Drainage
KW - Invasion percolation
KW - Open fracture flow
UR - http://www.scopus.com/inward/record.url?scp=10644225337&partnerID=8YFLogxK
U2 - 10.1016/j.advwatres.2004.07.005
DO - 10.1016/j.advwatres.2004.07.005
M3 - Article
AN - SCOPUS:10644225337
VL - 27
SP - 1217
EP - 1231
JO - Advances in water resources
JF - Advances in water resources
SN - 0309-1708
IS - 12
ER -