Results 81 to 90 of about 5,196 (222)

Distributed Memory Implementation of Multigrid Methods for Groundwater . . .

, 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, F. Saied, Hydrology Multiprocessors Numericalmethods Partialdifferential, Equations Multigrid Method   +3 more
core  

Adaptive Algebraic Multigrid Methods [PDF]

, 2004
Our ability to simulate physical processes numerically is constrained by our ability to solve the resulting linear systems, prompting substantial research into the development of multiscale iterative methods capable of solving these linear systems with ...
Falgout, R, Ruge, J, Manteuffel, T, McCormick, S, MacLachlan, S, Brezina, M   +5 more
core  

Operator dependent interpolation in algebraic multigrid

, 2022
S.189 ...
Krechel, A., Stüben, K.
core  

Efficient Frequency Sweep in RF Devices Simulation: A Combined Approach of Asymptotic Waveform Evaluation and Multigrid Solver

Engineering Reports
This paper presents a combined approach to accelerate frequency sweeping in the simulation of radio frequency (RF) devices, a critical process in the design and optimization of high‐performance RF systems.
Lingzhi Ren, Tao Li, Haili Zhang
doaj   +1 more source

Study on computational efficiency of composite schemes for convection-diffusion equations using single-grid and multigrid methods

Journal of Thermal Science and Technology, 2015
The computational efficiency of different composite schemes for the convection terms of the convection-diffusion equations is systematically studied in this paper.
Jingfa LI, Bo YU, Yi WANG, Yawen TANG, Huijie WANG   +4 more
doaj   +1 more source

DG P-Multigrid. Efficient Solvers and Complex Applications

, 2009
These lecture notes will focus on some efficiency-related topics relevant to an effective implementation of the p-multigrid technique, presented in the lecture notes “p-Multigrid For Discontinuous Galerkin Methods”, in a high-order DG method.
REBAY, Stefano, BASSI, Francesco, F. BASSI   +2 more
core   +1 more source

Numerical multigrid algorithm for solving integral equations

, 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  

Optimal control of probability density functions of stochastic processes

Mathematical Modelling and Analysis, 2010
A Fokker‐Planck framework for the formulation of an optimal control strategy of stochastic processes is presented. Within this strategy, the control objectives are defined based on the probability density functions of the stochastic processes.
Mario Annunziato, Alfio Borzì
doaj   +1 more source

Efficient Numerical Schemes for a Heterogeneous Reaction–Diffusion System with Applications

Mathematics
In this study, a class of nonlinear heterogeneous reaction–diffusion system (RDS) has been considered that arises in modeling epidemiological interactions, environmental sciences, and chemical and ecological systems.
Samima Akhter, Md. Ariful Islam Arif, Rubayyi T. Alqahtani, Samir Kumar Bhowmik   +3 more
doaj   +1 more source

Multigrid Methods for Computed Tomography

Symmetry
We consider the problem of computed tomography (CT). This ill-posed inverse problem arises when one wishes to investigate the internal structure of an object with a non-invasive and non-destructive technique. This problem is severely ill-conditioned, meaning it has infinite solutions and is extremely sensitive to perturbations in the collected data ...
Alessandro Buccini, Marco Donatelli, Marco Ratto   +2 more
openaire   +2 more sources