Results 51 to 60 of about 143 (130)

The numerical solution of delay-differential-algebraic equations of retarded and neutral type

open access: yes, 1995
. In this paper we consider the numerical solution of initial-value delay-differentialalgebraic equations (DDAEs) of retarded and neutral types, with a structure corresponding to that of Hessenberg DAEs.
Uri M. Ascher, R. Petzold, Linda
core  

Exponential Integrators For Quantum-Classical Molecular Dynamics

open access: yes, 1999
. We study time integration methods for equations of mixed quantum-classical molecular dynamics in which Newtonian equations of motion and Schrodinger equations are nonlinearly coupled. Such systems exhibit different time scales in the classical and the
Marlis Hochbruck, Christian Lubich
core  

Explicit Methods for Stiff ODEs from Atmospheric Chemistry [PDF]

open access: yes, 1994
The subject of research is the numerical integration of atmospheric chemical kinetics systems. The application lies in the study of air pollution, modelled by atmospheric chemistry-transport problems.
Simpson, D.   +4 more
core   +1 more source

Block Toeplitz Preconditioning for Static and Dynamic Linear Systems

open access: yes, 1996
. Acceleration techniques for iterative methods for linear systems of both static (Qy = b) and dynamic (y 0 = Qy+g(t)) type are analyzed. A new splitting Q = M \Gamma N , where M is block-Toeplitz is proposed.
B. Welfert, K. Burrage, Z. Jackiewicz
core  

Low-rank Parareal: a low-rank parallel-in-time integrator. [PDF]

open access: yesBIT Numer Math, 2023
Carrel B, Gander MJ, Vandereycken B.
europepmc   +1 more source

A new framework for polynomial approximation to differential equations. [PDF]

open access: yesAdv Comput Math, 2022
Brugnano L   +3 more
europepmc   +1 more source

Convolution-Based Chebyshev Acceleration Of Waveform Relaxation Methods

open access: yes, 1997
. Waveform relaxation is a numericalmethod for solving large-scale systems of ordinary differential equations. In this paper, it is investigated whether the convergence of waveform relaxation can be accelerated by Chebyshev acceleration techniques.
Stefan Vandewalle, Jan Janssen
core  

Numerical results for a parallel linearly-implicit Runge-Kutta method

open access: yes, 2007
Zusammenfassung Numerical results for a parallel linearly--implicit Runge--Kutta method. For the parallelization of implicit Runge--Kutta methods for stiff ODE's a parallel computation of the stages is obvious.
Jürgen Bruder   +2 more
core  

Gauss-Seidel Iteration for Stiff ODEs from Chemical Kinetics [PDF]

open access: yes, 1993
A simple Gauss-Seidel technique is proposed which exploits the special form of the chemical kinetics equations. Classical Aitken extrapolation is applied to accelerate convergence.
J. G. Verwer   +2 more
core   +2 more sources

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