A preconditioner for generalized saddle-point problems based on the Hermitian and Skew-Hermitian splitting (HSS) is described. The preconditioner is used with GM-RES in the solution of finite element discretizations of the steady-state Oseen (linearized Navier-Stokes) equations. The behavior of the preconditioner with respect to problem parameters like mesh size and viscosity is illustrated by means of a few numerical experi ments.
HSS preconditioning for the oseen problem
Benzi, Michele
2004
Abstract
A preconditioner for generalized saddle-point problems based on the Hermitian and Skew-Hermitian splitting (HSS) is described. The preconditioner is used with GM-RES in the solution of finite element discretizations of the steady-state Oseen (linearized Navier-Stokes) equations. The behavior of the preconditioner with respect to problem parameters like mesh size and viscosity is illustrated by means of a few numerical experi ments.File in questo prodotto:
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