Name
Title | ||
|---|---|---|
On the eigenvalues of the saddle point matrices discretized from Navier-Stokes equations. |
Abstract | ||
|---|---|---|
In this paper, we study the spectral distributions of the saddle point matrices arising from the discretization and linearization of the Navier–Stokes equations, where the (1,1) block is nonsymmetric positive definite. In this paper, we derive the lower and upper bounds of the real and imaginary parts of all the eigenvalues of the saddle point matrices. We then propose a new class of block triangle preconditioners for solving the saddle point problems, and analyze the spectral properties of the preconditioned systems. Some numerical experiments with the preconditioned restarted generalized minimal residual method are reported to demonstrate the effectiveness and feasibility of these block triangle preconditioners. |
Year | DOI | Venue |
|---|---|---|
2018 | 10.1007/s11075-017-0427-5 | Numerical Algorithms |
Keywords | Field | DocType |
Navier–Stokes equations, Saddle point problem, Spectral estimates, Preconditioner, Nonsymmetric, 65F10, 65F08, 65F50 | Discretization,Mathematical optimization,Saddle point,Preconditioner,Generalized minimal residual method,Mathematical analysis,Matrix (mathematics),Eigenvalues and eigenvectors,Mathematics,Linearization,Navier–Stokes equations | Journal |
Volume | Issue | ISSN |
79 | 1 | 1017-1398 |
Citations | PageRank | References |
0 | 0.34 | 28 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Na Huang | 1 | 24 | 3.53 |
| Chang-Feng Ma | 2 | 6 | 2.90 |