Results 31 to 40 of about 85 (58)

Freezing traveling and rotatingwaves in second order evolution equations [PDF]

open access: yes, 2016
In this paper we investigate the implementation of the so-called freezing method for second order wave equations in one and several space dimensions. The method converts the given PDE into a partial differential algebraic equation which is then solved ...
Beyn, Wolf-Jürgen   +2 more
core   +3 more sources

Numerical analysis of a lumped parameter friction model [PDF]

open access: yes, 2015
summary:We consider a contact problem of planar elastic bodies. We adopt Coulomb friction as (an implicitly defined) constitutive law. We will investigate highly simplified lumped parameter models where the contact boundary consists of just one point. In
Janovský, Vladimír
core  

Modeling still matters: a surprising instance of catastrophic floating point errors in mathematical biology and numerical methods for ODEs

open access: yes, 2023
We guide the reader on a journey through mathematical modeling and numerical analysis, emphasizing the crucial interplay of both disciplines. Targeting undergraduate students with basic knowledge in dynamical systems and numerical methods for ordinary ...
Ranocha, Hendrik, Reisch, Cordula
core  

Existence and stability of solitons for fully discrete approximations of the nonlinear Schrödinger equation [PDF]

open access: yes, 2012
International audienceIn this paper we study the long time behavior of a discrete approximation in time and space of the cubic nonlinear Schrödinger equation on the real line.
Bambusi, Dario   +2 more
core   +4 more sources

\^A-and \^I-stability of collocation Runge-Kutta methods

open access: yes, 2023
This paper deals with stability of classical Runge-Kutta collocation methods. When such methods are embedded in linearly implicit methods as developed in [12] and used in [13] for the time integration of nonlinear evolution PDEs, the stability of these ...
Dujardin, Guillaume   +1 more
core  

On the convergence of a method for solving two point boundary value problems by optimal control [PDF]

open access: yes, 2002
Using the idea of the least squares method, a nonlinear two point boundary value problem is transformed into an optimal control problem. For solving the optimal control problem the gradient method is used.
Ernest Scheiber
core   +1 more source

On some one-step implicit methods as dynamical systems [PDF]

open access: yes, 2003
The one-step implicit methods, the backward Euler being the most known, require the solution of a nonlinear equation at each step.To avoid this, these methods can be approximated by making use of a one step of a Newton method.
Călin-Ioan Gheorghiu
core   +1 more source

Enhanced forecasting of Biomass-toxicity-water models using numerical simulations [PDF]

open access: yes
Numerical techniques are essential tools to solve reaction-diffusion models in ecology, addressing the intrinsic complexity arising from nonlinear and coupled systems.
Abbas, Mudassar   +3 more
core   +1 more source

Computation and Stability of TravelingWaves in Second Order Evolution Equations [PDF]

open access: yes, 2016
The topic of this paper are nonlinear traveling waves occuring in a system of damped waves equations in one space variable. We extend the freezing method from first to second order equations in time.
Beyn, Wolf-Jürgen   +2 more
core   +2 more sources

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