A Reduced Basis Method for Darcy flow systems that ensures local mass conservation by using exact discrete complexes
- Resource Type
- Authors
- Wietse M. Boon; Alessio Fumagalli
- Source
- Subject
- Computational Mathematics
Numerical Analysis
Computational Theory and Mathematics
Applied Mathematics
General Engineering
FOS: Mathematics
Mathematics - Numerical Analysis
Numerical Analysis (math.NA)
Software
65N22, 76M10, 55U15, 65N30
Theoretical Computer Science
- Language
A solution technique is proposed for flows in porous media that guarantees local conservation of mass. We first compute a flux field to balance the mass source and then exploit exact co-chain complexes to generate a solenoidal correction. A reduced basis method based on proper orthogonal decomposition is employed to construct the correction and we show that mass balance is ensured regardless of the quality of the reduced basis approximation. The method is directly applicable to mixed finite and virtual element methods, among other structure-preserving discretization techniques, and we present the extension to Darcy flow in fractured porous media.