Comparison of finite-volume schemes for diffusion problems

• Main Authors: Schneider Martin, Gläser Dennis, Flemisch Bernd, Helmig Rainer
• Format: Article
• Language: English
• Published: EDP Sciences 2018-01-01
• Series: Oil & Gas Science and Technology
• Online Access: https://doi.org/10.2516/ogst/2018064

We present an abstract discretization framework and demonstrate that various cell-centered and hybrid finite-volume schemes fit into it. The different schemes considered in this work are then analyzed numerically for an elliptic model problem with respect to the properties consistency, coercivity, extremum principles, and sparsity. The test cases presented comprise of two- and three-dimensional setups, mildly and highly anisotropic tensors and grids of different complexities. The results show that all schemes show a similar convergence behavior, except for the two-point flux approximation scheme, and seem to be coercive. Furthermore, they confirm that linear schemes, in contrast to nonlinear schemes, are in general neither positivity-preserving nor satisfy discrete minimum or maximum principles.