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math.NA2022
Block Preconditioners for the Marker-and-Cell Discretization of the Stokes-Darcy Equations
Chen Greif, Yunhui He
We consider the problem of iteratively solving large and sparse double saddle-point systems arising from the stationary Stokes-Darcy equations in two dimensions, discretized by the…
math.NA2022★ 1 cited
Augmentation-Based Preconditioners for Saddle-Point Systems with Singular Leading Blocks
Susanne Bradley, Chen Greif
We consider the iterative solution of symmetric saddle-point matrices with a singular leading block. We develop a new ideal positive definite block diagonal preconditioner that yie…