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Robust monolithic solvers for the Stokes-Darcy problem with the Darcy equation in primal form (2110.07486v1)
Published 14 Oct 2021 in math.NA and cs.NA
Abstract: We construct mesh-independent and parameter-robust monolithic solvers for the coupled primal Stokes-Darcy problem. Three different formulations and their discretizations in terms of conforming and non-conforming finite element methods and finite volume methods are considered. In each case, robust preconditioners are derived using a unified theoretical framework. In particular, the suggested preconditioners utilize operators in fractional Sobolev spaces. Numerical experiments demonstrate the parameter-robustness of the proposed solvers.