Results 11 to 20 of about 22,776 (283)

An adaptive preconditioner for steady incompressible flows [PDF]

open access: yes, 2016
This paper describes an adaptive preconditioner for numerical continuation of incompressible Navier--Stokes flows. The preconditioner maps the identity (no preconditioner) to the Stokes preconditioner (preconditioning by Laplacian) through a continuous ...
Beaume, C.
core   +2 more sources

A weakly overlapping parallel domain decomposition preconditioner for the finite element solution of convection-dominated problems in three dimensions [PDF]

open access: yes, 2002
In this paper we describe the parallel application of a novel two level additive Schwarz preconditioner to the stable finite element solution of convection-dominated problems in three dimensions. This is a generalization of earlier work, [2,6], in 2-
Jimack, P.K., Nadeem, S.A.
core   +1 more source

A preconditioned iterative method for coupled fractional partial differential equation in European option pricing

open access: yesOpen Mathematics, 2023
Recently, regime-switching option pricing based on fractional diffusion models has been used, which explains many significant empirical facts about financial markets better.
Wu Shuang   +3 more
doaj   +1 more source

Parallel accelerated cyclic reduction preconditioner for three-dimensional elliptic PDEs with variable coefficients [PDF]

open access: yes, 2017
We present a robust and scalable preconditioner for the solution of large-scale linear systems that arise from the discretization of elliptic PDEs amenable to rank compression.
Chávez, Gustavo   +3 more
core   +2 more sources

The ILUCP Preconditioner [PDF]

open access: yesPAMM, 2004
AbstractWe introduce a new incomplete LU‐type preconditioner which combines the advantages of Crout's formulation of Gaussian elimination with pivoting. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
openaire   +2 more sources

A Comparative Study of Block Incomplete Sparse Approximate Inverses Preconditioning on Tesla K20 and V100 GPUs

open access: yesAlgorithms, 2021
Incomplete Sparse Approximate Inverses (ISAI) has shown some advantages over sparse triangular solves on GPUs when it is used for the incomplete LU based preconditioner.
Wenpeng Ma, Wu Yuan, Xiazhen Liu
doaj   +1 more source

Absolute value preconditioning for symmetric indefinite linear systems [PDF]

open access: yes, 2013
We introduce a novel strategy for constructing symmetric positive definite (SPD) preconditioners for linear systems with symmetric indefinite matrices.
Andrew V. Knyazev   +4 more
core   +1 more source

A dimension expanded preconditioning technique for block two-by-two linear equations

open access: yesDemonstratio Mathematica, 2023
In this article, we introduce a novel block preconditioner for block two-by-two linear equations by expanding the dimension of the coefficient matrix. Theoretical results on the eigenvalues distribution of the preconditioned matrix are obtained, and a ...
Luo Wei-Hua, Carpentieri Bruno, Guo Jun
doaj   +1 more source

Efficient modeling of antennas with finite conductivity using calderón preconditioning [PDF]

open access: yes, 2018
A Calderon preconditioner for a novel single-source integral equation, which allows the simulation of high dielectric contrasts and lossy conductors, is introduced. It is shown that this preconditioner avoids breakdown when simulating scattering problems
De Zutter, Daniël   +3 more
core   +2 more sources

Application of a Sparsity Pattern and Region Clustering for Near Field Sparse Approximate Inverse Preconditioners in Method of Moments Simulations

open access: yesInternational Journal of Antennas and Propagation, 2017
This document presents a technique for the generation of Sparse Inverse Preconditioners based on the near field coupling matrices of Method of Moments simulations where the geometry has been partitioned in terms of regions.
Carlos Delgado   +2 more
doaj   +1 more source

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