InterPore2021

Simulation of fractured porous media using partitioned black-box methods

1 Jun 2021, 15:25

15m

Oral Presentation (MS7) Mathematical and numerical methods for multi-scale multi-physics, nonlinear coupled processes MS7

Speaker

Dr Alexander Jaust (University of Stuttgart)

Description

The simulation of coupled fracture flow and deforming porous medium is a
challenging problem in reservoir engineering. Common examples are
hydraulic simulations or hydro-fracking. Some of the challenges arise
due to the difference in properties of the mathematical models used in
each of the subdomains. Solving the problem using a monolithic approach
leads to an ill-conditioned system of equations implying the necessity
of using a direct solver for the resulting linear system of equations.

We investigate a partitioned black-box coupling approach based on the
idea of domain decomposition techniques. The individual problems are
solved separately in an iterative manner such that we can use standard
iterative solvers for the linear systems. Our approach is based on the
open-source library preCICE (www.precice.org) allowing us to reuse
existing solver software and simplifying the setup of new solvers that
are immediately prepared for high-performance parallel computations.