An inexact modified relaxed splitting preconditioner for the generalized saddle point problems from the incompressible Navier-Stokes equations

作者：Ke, Yi-Fen; Ma, Chang-Feng^*

来源：Numerical Algorithms, 2017, 75(4): 1103-1121.

DOI：10.1007/s11075-016-0233-5

• Generalized saddle point problem
• Relaxed splitting
• Eigenvalue
• Preconditioner
• Navier-Stokes equation

Based on the modified relaxed splitting (MRS) preconditioner proposed by Fan and Zhu (Appl. Math. Lett. 55, 18-26 2016), an inexact modified relaxed splitting (IMRS) preconditioner is proposed for the generalized saddle point problems arising from the incompressible Navier-Stokes equations. The eigenvalues and eigenvectors of the preconditioned matrix are analyzed, and the convergence property of the corresponding iteration method is also discussed. Numerical experiments are presented to show the effectiveness of the proposed preconditioner when it is used to accelerate the convergence rate of Krylov subspace methods such as GMRES.

• 出版日期2017-8
• 单位福建师范大学