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Non-linear fluid flow through rough-walled fractures

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2009
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Conference Paper

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Javadi, M. and Sharifzadeh, M. and Shahriar, K. and Mehrjooei, M. 2009. Non-linear fluid flow through rough-walled fractures, in Vrkljan, I. (ed), Proceedings of the EUROCK2009 Regional Symposium of the International Society for Rock Mechanics (ISRM): Rock Engineering in Difficult Ground Conditions – Soft Rocks and Karst, Oct 29-31 2009, pp. 261-266. Cavtat, Croatia.
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Proceedings of the EUROCK2009 ISRM Regional Symposium Rock Engineering in Difficult Ground Conditions Soft Rocks and Karst
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EUROCK2009 ISRM Regional Symposium Rock Engineering in Difficult Ground Conditions Soft Rocks and Karst
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Abstract

Fractures in rock mass are the main flow paths and introduce as a most important attribute in rock mass hydraulic behavior. Hydraulic properties of rock mass are important in civil, mining, and environmental such as Isolation of hazardous and nuclear waste, petroleum and geothermal energy. In this paper, single-phase fluid flow through a rock fracture was studied. Computational domain for an artificial three-dimensional fracture was generated and used for numerical fluid flow simulations. Both laminar and turbulent flow simulations were performed for a wide range of inlet velocities. The results show that the relation between pressure drop and flow rate has a quadratic polynomial form and Forchheimer law was fitted very well to flow simulation results. Also the predicted static pressure drop for turbulent flow simulation was roughly 3% to 17% more than those predicted with laminar flow simulation at Reynolds number of 4.5 to 89.5, respectively.