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A New Preconditioner with Two Variable Relaxation Parameters for Saddle Point Linear Systems with Highly Singular(1,1) Blocks
Saddle Point Linear Systems Block Triangular Preconditioner Krylov Subspace Methods
2013/1/30
In this paper, we provide new preconditioner for saddle point linear systems with (1,1) blocks that have a high nullity. The preconditioner is block triangular diagonal with two variable relaxation pa...
We extend the SCGS smoothing procedure (Symmetrical Collective
Gauss--Seidel relaxation) proposed by S.~P.~Vanka$^{[4]}$,
for multigrid solvers of the steady viscous incompressible Navier--Stokes
e...