Results 31 to 40 of about 237 (72)

Finite difference schemes on quasi-uniform grids for Bvps on infinite intervals

open access: yes, 2014
The classical numerical treatment of boundary value problems defined on infinite intervals is to replace the boundary conditions at infinity by suitable boundary conditions at a finite point, the so-called truncated boundary.
Fazio, Riccardo, Jannelli, Alessandra
core   +1 more source

An analysis of the practical DPG method [PDF]

open access: yes, 2011
In this work we give a complete error analysis of the Discontinuous Petrov Galerkin (DPG) method, accounting for all the approximations made in its practical implementation.
Gopalakrishnan, Jay, Qiu, Weifeng
core  

Numerical Methods for a Nonlinear BVP Arising in Physical Oceanography [PDF]

open access: yes, 2013
In this paper we report and compare the numerical results for an ocean circulation model obtained by the classical truncated boundary formulation, the free boundary approach and a quasi-uniform grid treatment of the problem. We apply a shooting method to
Fazio, Riccardo, Jannelli, Alessandra
core  

Solving 2^{nd} order parabolic system by simulations of Markov jump processes [PDF]

open access: yes, 1999
There are known methods of approximating the solution of parabolic 2^{nd} order systems by solving stochastic differential equations instead. The main idea is based on the fact that a stochastic differential equation defines a diffusion process ...
M. Rogina, N. Limić
core   +1 more source

A Class of Second Order Difference Approximation for Solving Space Fractional Diffusion Equations

open access: yes, 2012
A class of second order approximations, called the weighted and shifted Gr\"{u}nwald difference operators, are proposed for Riemann-Liouville fractional derivatives, with their effective applications to numerically solving space fractional diffusion ...
Deng, Weihua, Tian, WenYi, Zhou, Han
core   +1 more source

Matrix methods for radial Schr\"{o}dinger eigenproblems defined on a semi-infinite domain

open access: yes, 2013
In this paper, we discuss numerical approximation of the eigenvalues of the one-dimensional radial Schr\"{o}dinger equation posed on a semi-infinite interval.
Aceto, Lidia   +2 more
core  

Preserving energy resp. dissipation in numerical PDEs using the "Average Vector Field" method

open access: yes, 2012
We give a systematic method for discretizing Hamiltonian partial differential equations (PDEs) with constant symplectic structure, while preserving their energy exactly. The same method, applied to PDEs with constant dissipative structure, also preserves
Celledoni, E.   +6 more
core   +1 more source

An asynchronous leapfrog method II [PDF]

open access: yes, 2016
A second order explicit one-step numerical method for the initial value problem of the general ordinary differential equation is proposed. It is obtained by natural modifications of the well-known leapfrog method, which is a second order, two-step ...
Mutze, Ulrich
core  

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