Results 111 to 120 of about 11,516 (229)

Multigrid Methods

open access: yes, 2010
In this article, we discuss multigrid methods for partial differential operators appearing in computational finance. We focus on multigrid for anisotropic problems, for the pricing of multiasset options, for linear complementarity problems for American ...
Oosterlee, C.W. (Kees)
core   +1 more source

Adaptive metric-based multigrid for a Poisson problem with discontinuous coefficients*, **

open access: yesESAIM: Proceedings and Surveys, 2014
In order to solve the linear partial differential equation Au = f, we combine two methods: Full-Multigrid method and Hessian-based mesh adaptation.
Brèthes Gautier
doaj   +1 more source

Multi-Grid Lanczos

open access: yesEPJ Web of Conferences, 2018
We present a Lanczos algorithm utilizing multiple grids that reduces the memory requirements both on disk and in working memory by one order of magnitude for RBC/UKQCD’s 48I and 64I ensembles at the physical pion mass.
Clark M. A.   +2 more
doaj   +1 more source

Distributed Memory Implementation of Multigrid Methods for Groundwater . . .

open access: yes, 1996
In this paper we present parallel solvers for large linear systems arising from the finite--element discretization of three--dimensional groundwater flowproblems.Wehavetestedourparallelimplementations on the Intel Paragon XP/S 150 supercomputer using up ...
G. Mahinthakumar   +3 more
core  

Multigrid method for noncoercive parabolic variational inequality

open access: yesJournal of Inequalities and Applications
In this article, our work is focused on the proof of the uniform convergence of the multigrid method for parabolic variational inequality with a noncoercive operator and its numerical solution.
Mostafa Bahi   +3 more
doaj   +1 more source

Nonlinear multigrid techniques

open access: yes, 2001
In these introductory notes, we focus on smooth and piecewise smooth semilinear elliptic partial differential equations in the framework of convex minimization problems. We present and analyze old and new nonlinear multigrid techniques.
Ralf Kornhuber, Kornhuber, R.
core   +1 more source

Phase field modeling and computation of vesicle growth or shrinkage. [PDF]

open access: yesJ Math Biol, 2023
Tang X, Li S, Lowengrub JS, Wise SM.
europepmc   +1 more source

Cellular Genetic Algorithm with Communicating Grids for Assembly Line Balancing Problems

open access: yesAdvances in Electrical and Computer Engineering, 2010
This paper presents a new approach with cellular multigrid genetic algorithms for the "I"-shaped and "U"-shaped assembly line balancing problems, including parallel workstations and compatibility constraints.
BRUDARU, O., POPOVICI, D., COPACEANU, C.
doaj   +1 more source

Efficiency Improvements of RANS-Based Analysis and Optimization using Implicit and Adjoint Methods on Unstructured Grids

open access: yes, 2006
The efficiency of an unstructured grid finite volume RANS solver is signicantly improved using two implicit methods based on diering philosophies. The LU-SGS multigrid method aims to improve performance, while maintaining the low memory requirements and
Dwight, Richard
core  

Numerical multigrid algorithm for solving integral equations

open access: yes, 2014
Integral equations arise in many scienti c and engineering problems. A large class of initial and boundary value problems can be converted to Volterra or Fredholm integral equations.
Paul, Subrata
core  

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