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Parallel 3-d simulations for porous media models in soil mechanics. (English) Zbl 1066.74040

Summary: Numerical simulations in three-dimensional for porous media models in soil mechanics are a difficult task for the engineering modelling as well as for numerical realization. Here, we present a general numerical scheme for the simulation of two-phase models in combination with an abstract material model via the stress response with a specialized parallel saddle point solver. Therefore, we give a brief introduction into the theoretical background of the theory of porous media and constitute a two-phase model consisting of a porous solid skeleton saturated by a viscous pore-fluid. The material behaviour of the skeleton is assumed to be elasto-viscoplastic. The governing equations are transfered to a weak formulation suitable for the application of finite element method. Introducing an abstract formulation in terms of the stress response, we define a clear interface between the assembling process and the parallel solver modules. We demonstrate the efficiency of this approach by challenging numerical experiments realized on Linux Cluster in Chemnitz.

MSC:

74L10 Soil and rock mechanics
74F10 Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.)
74S05 Finite element methods applied to problems in solid mechanics
74S20 Finite difference methods applied to problems in solid mechanics
76S05 Flows in porous media; filtration; seepage
65Y05 Parallel numerical computation

Software:

UG
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