A variant of the deteriorated PSS preconditioner for nonsymmetric saddle point problems (Q291907): Difference between revisions
From MaRDI portal
Set profile property. |
Set OpenAlex properties. |
||
| Property / full work available at URL | |||
| Property / full work available at URL: https://doi.org/10.1007/s10543-015-0590-9 / rank | |||
Normal rank | |||
| Property / OpenAlex ID | |||
| Property / OpenAlex ID: W2224945857 / rank | |||
Normal rank | |||
Revision as of 01:54, 20 March 2024
scientific article
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A variant of the deteriorated PSS preconditioner for nonsymmetric saddle point problems |
scientific article |
Statements
A variant of the deteriorated PSS preconditioner for nonsymmetric saddle point problems (English)
0 references
10 June 2016
0 references
The authors propose an improvement of a previously considered ``deteriorated positive definite and skew-Hermitian splitting preconditioner'' by replacing the shift term \(\alpha I\) with \(0\). In this respect, they derive sharper bounds for the real part of the eigenvalues different than \(1\). Numerical experiments of a model Navier-Stokes problem are presented to illustrate the effectiveness of the new preconditioner.
0 references
saddle-point problems
0 references
preconditioning
0 references
spectral properties
0 references
Krylov subspace method
0 references
Navier-Stokes equation
0 references
numerical experiment
0 references
