Feb 19, 2011 · We relate the so-called smoothing factor to the actual two-grid convergence rate and also to the convergence rate of the V-cycle multigrid. We ...
Abstract. We consider the Fourier analysis of multigrid methods (of Galerkin type) for symmetric positive definite and semi-positive definite linear systems ...
Smoothing factor, order of prolongation and actual multigrid convergence. August 2009; Numerische Mathematik 118(3):457-483. DOI:10.1007/s00211-011-0362-7.
Feb 19, 2011 · Smoothing factor, order of prolongation and actual multigrid convergence. 459 the effect of the coarse grid correction. Regarding the V-cycle ...
... prolongation operators are defined from finite element spaces, the AMG ... convergence bound that approaches 1 as a geometrical sequence [25]. This ...
In this paper we consider Newton-MG and FAS iterations applied to second order differential operators with nonlinear diffusion coefficient.
1 The overall multigrid convergence factor is small & bounded uniformly in h ! smooth k=1 oscillatory k=N k=N/2. Relax on fine grid. Relax 1st coarse grid.
Abstract. We look at multigrid methods for unsteady viscous compressible flows. We specif- ically target smoothers that can be used in parallel and without ...
People also ask
What is the convergence of Multigrid method?
The prolongation operator is then obtained by smoothing the output of the tentative prolongation and coarse level operators are de ned variationally. Multigrid.
Missing: actual | Show results with:actual
Abstract. This paper is concerned with the treatment of higher order multi-grid techniques for obtaining accurate finite difference approximations to�...