Results 61 to 70 of about 148 (128)

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  

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  

Symplectic Runge-Kutta Schemes III: Canonical Elementary Differentials

open access: yes, 1993
. It has been shown that numerical methods for Hamiltonian systems may be characterised in terms of so-called canonical elementary differentials. Recent results by the authors demonstrate that the symplecticity condition for Runge-Kutta schemes may be ...
M. Sofroniou, W. Oevel
core  

Analytical and qualitative investigation of COVID-19 mathematical model under fractional differential operator. [PDF]

open access: yesMath Methods Appl Sci, 2021
Shah K   +5 more
europepmc   +1 more source

Application of Sparse Matrix Techniques in the Chemical Part of a Large Air Pollution Model

open access: yes, 2007
Large-scale air pollution models are represented by large systems of partial differential equations. After some discretization and splitting procedures these are transformed into several huge systems of ODE's, which are to be handled numerically ...
Z. Zlatev, Tz Ostromsky, Zahari Zlatev
core  

Discretization And Weak Invariants

open access: yes, 1994
. We consider the preservation of weak solution invariants in the time integration of ordinary differential equations (ODEs). Recent research has concentrated on obtaining symplectic discretizations of Hamiltonian systems and schemes that preserve ...
B. Leimkuhler
core  

Convergence of Runge-Kutta methods for delay differential equations

open access: yes, 1999
This paper deals with the adaptation of Runge--Kutta methods to the numerical solution of (nonstiff) initial value problems for delay differential equations.
K.J. in 't Hout   +2 more
core  

Estimating Waveform Relaxation Convergence

open access: yes, 1993
. Critical limitations of the waveform relaxation method concern the unsolved problems of estimating convergence and controlling the iteration. In this paper, waveform relaxation is applied to a linear, second-order model system and is studied in the ...
B. Leimkuhler
core  

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