A Hybrid High-Order method for multiple-network poroelasticity

Keywords

Advanced Numerical Methods for Scientific Computing
Code:
56/2020
Title:
A Hybrid High-Order method for multiple-network poroelasticity
Date:
Friday 7th August 2020
Author(s):
Botti, L.; Botti, M.; Di Pietro, D. A.;
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Abstract:
We develop Hybrid High-Order methods for multiple-network poroelasticity, modelling seepage through deformable fissured porous media. The proposed methods are designed to support general polygonal and polyhedral elements. This is a crucial feature in geological modelling, where the need for general elements arises, e.g., due to the presence of fracture and faults, to the onset of degenerate elements to account for compaction or erosion, or when nonconforming mesh adaptation is performed. We use as a starting point a mixed weak formulation where an additional total pressure variable is added, that ensures the fulfilment of a discrete inf-sup condition. A complete theoretical analysis is performed, and the results are demonstrated on a panel of numerical tests.
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SEMA-SIMAI monograph: Polyhedral Methods for Geosciences