Journal
COMPUTATIONAL GEOSCIENCES
Volume 17, Issue 2, Pages 373-390Publisher
SPRINGER
DOI: 10.1007/s10596-012-9335-x
Keywords
Numerical modeling; Coupled brittle-ductile deformation; DEM; SPH; Boudinage; Hydrofracturing
Funding
- ExxonMobil Production Deutschland GmbH
- GDF SUEZ E&P Deutschland GmbH
- RWE Dea AG
- Wintershall Holding GmbH within WEG Wirtschaftsverband Erdol- und Erdgasgewinnung e.V.
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We have developed a new approach for the numerical modeling of deformation processes combining brittle fracture and viscous flow. The new approach is based on the combination of two meshless particle-based methods: the discrete element method (DEM) for the brittle part of the model and smooth particle hydrodynamics (SPH) for the viscous part. Both methods are well established in their respective application domains. The two methods are coupled at the particle scale, with two different coupling mechanisms explored: one is where DEM particles act as virtual SPH particles and one where SPH particles are treated like DEM particles when interacting with other DEM particles. The suitability of the combined approach is demonstrated by applying it to two geological processes, boudinage, and hydrofracturing, which involve the coupled deformation of a brittle solid and a viscous fluid. Initial results for those applications show that the new approach has strong potential for the numerical modeling of coupled brittle-viscous deformation processes.
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