Volume 102, Number 6, June 2013
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||27 June 2013|
Drainage fracture networks in elastic solids with internal fluid generation
1 Physics of Geological Processes, University of Oslo - Oslo, Norway
2 International Research Institute of Stavanger - Stavanger, Norway
3 Univ. Grenoble 1, ISTerre - BP 53, F-38041 Grenoble, France, EU
4 Temple University, Department of Physics - Barton Hall, Philadelphia, PA 19122-6082, USA
Received: 17 May 2013
Accepted: 12 June 2013
Experiments in which CO2 gas was generated by the yeast fermentation of sugar in an elastic layer of gelatine gel confined between two glass plates are described and analyzed theoretically. The CO2 gas pressure causes the gel layer to fracture. The gas produced is drained on short length scales by diffusion and on long length scales by flow in a fracture network, which has topological properties that are intermediate between river networks and hierarchical-fracture networks. A simple model for the experimental system with two parameters that characterize the disorder and the intermediate (river-fracture) topology of the network was developed and the results of the model were compared with the experimental results.
PACS: 64.60.aq – Networks / 47.54.−r – / 64.60.av –
© EPLA, 2013
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