Results 81 to 90 of about 4,826 (176)

Convergence analysis for nonlinear GMRES

open access: yesIMA Journal of Numerical Analysis
Abstract In this work we revisit nonlinear generalized minimal residual method (NGMRES) applied to nonlinear problems. NGMRES is used to accelerate the convergence of fixed-point iterations, which can substantially improve the performance of the underlying fixed-point iterations.
openaire   +3 more sources

GMRES with Randomized Sketching and Deflated Restarting

open access: yesSIAM Journal on Matrix Analysis and Applications
24 Pages; 6 Figures; 4 ...
Liam Burke 0002   +2 more
openaire   +4 more sources

On the numerical stability of sketched GMRES

open access: yesCoRR
23 pages, 6 ...
Liam Burke 0003, Erin Carson, Yuxin Ma
openaire   +2 more sources

An augmented IIM-level set method for Stokes equations with discontinuous viscosity

open access: yesElectronic Journal of Differential Equations, 2007
A finite difference method is proposed for incompressible Stokes equations with discontinuous viscosity. The method combines the augmented immersed interface method with a level set representation of the interface on a uniform Cartesian grid.
Zhilin Li, Sharon R. Lubkin, Xiaohai Wan
doaj  

The algorithmic resolution of spectral-element discretization for the time-dependent Stokes problem

open access: yesBoundary Value Problems
We consider two algorithms for the resolution of the time-dependent Stokes problem with nonstandard boundary conditions by the domain-decomposition spectral-element method.
Henda Ouertani, Mohamed Abdelwahed
doaj   +1 more source

基于区域分解求解多尺度HVDC地电流场的广义极小残量迭代算法

open access: yesGaoya dianqi, 2018
为准确求解高压直流输电(HVDC)单极运行或故障状态下的入地电流场,需要建立更加贴近实际的计算模型。文中在建模时将接地极的具体尺寸考虑在内,并且将大地模型尺寸增大到上千公里,使得模型更加贴近实际,可以得到更准确的计算结果。考虑到接地极和大地区域尺寸的差距,模型属于多尺度模型。针对多尺度模型,文中采用重叠型的区域分解法,将包含接地极在内的小区域从整体模型中分解出来,独立建模求解。选取虚拟边界上的电位为迭代变量,将整个问题最终转化为非对称实数线性方程组。针对区域分解的迭代 ...
陶瑞祥, 王泽忠
doaj  

MARIE 2.0: A Perturbation Matrix Based Patient-Specific MRI Field Simulator. [PDF]

open access: yesIEEE Trans Biomed Eng, 2023
Guryev GD   +6 more
europepmc   +1 more source

Going Beyond the Limits of Classical Atomistic Modeling of Plasmonic Nanostructures. [PDF]

open access: yesJ Phys Chem C Nanomater Interfaces, 2021
Lafiosca P   +3 more
europepmc   +1 more source

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