Design of a nonlinear model for the propagation of COVID-19 and its efficient nonstandard computational implementation. [PDF]
Rafiq M +3 more
europepmc +1 more source
The numerical solution of delay-differential-algebraic equations of retarded and neutral type
. 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
. 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]
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
. 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]
Carrel B, Gander MJ, Vandereycken B.
europepmc +1 more source
A new framework for polynomial approximation to differential equations. [PDF]
Brugnano L +3 more
europepmc +1 more source
Convolution-Based Chebyshev Acceleration Of Waveform Relaxation Methods
. 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
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]
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

