A parallel finite element scheme for thermo-hydro-mechanical (THM) coupled problems in porous media

摘要: Many applied problems in geoscience require knowledge about complex interactions between multiple physical and chemical processes the sub-surface. As a direct experimental investigation is often not possible, numerical simulation common approach. The analysis of coupled thermo-hydro-mechanical (THM) computationally very expensive, therefore applicability existing codes still limited to simplified problems. In this paper we present novel implementation parallel finite element method (FEM) for THM porous media. computational task FEM partitioned into sub-tasks by priori domain decomposition. are assigned CPU nodes concurrently. Parallelization achieved simultaneously establishing sub-domain mesh topology, synchronously assembling linear equation systems sub-domains obtaining overall solution with solver (parallel BiCGStab Jacobi pre-conditioner). parallelization implemented an object-oriented way using MPI inter-processor communication. code was successfully tested 2-D example from international DECOVALEX benchmarking project. speed-up 3-D extension test on different computers demonstrates advantage scheme.