Results 11 to 20 of about 143 (130)

A reliable method based on second kind Chebyshev polynomial for the fractional model of Bloch equation

open access: yesAlexandria Engineering Journal, 2018
In this paper we present a reliable method based on second kind Chebyshev polynomial for the approximate solution of fractional Bloch equation in Nuclear Magnetic Resonance (NMR). The main advantages of the proposed method that it converts the fractional
Harendra Singh, C.S. Singh
doaj   +2 more sources

Numerical solution of third order boundary value problems using one-step hybrid block method

open access: yesAin Shams Engineering Journal, 2019
Numerical hybrid block methods have been thought to be an appropriate method for solving ordinary differential equation. Therefore, this paper introduces a one-step hybrid block method of order five for directly solving third order boundary value ...
Ra’ft Abdelrahim
doaj   +2 more sources

New solitary wave and multiple soliton solutions for fifth order nonlinear evolution equation with time variable coefficients [PDF]

open access: yesResults in Physics, 2018
In this paper, we investigate the multiple soliton solutions and multiple singular soliton solutions of a class of the fifth order nonlinear evolution equation with variable coefficients of t using the simplified bilinear method based on a transformation
H.M. Jaradat   +4 more
doaj   +2 more sources

Multigrid waveform relaxation on spatial finite element meshes: The discrete-time case [PDF]

open access: yes, 1996
. The waveform relaxation method and its multigrid acceleration are studied as solution procedures for the system of ordinary differential equations obtained by finite element discretisation of a linear parabolic initial boundary value problem.
Stefan Vandewalle   +3 more
core   +1 more source

Adiabatic integrators for highly oscillatory second order linear differential equations with time-varying eigendecomposition [PDF]

open access: yes, 2005
. Numerical integrators for second order differential equations with time-dependent high frequencies are proposed and analysed. We derive two such methods, called the adiabatic midpoint rule and the adiabatic Magnus method. The integrators are based on a
Lubich, Ch.   +5 more
core   +1 more source

Accurate Four-Step Hybrid Block Method for Solving Higher-Order Initial Value Problems

open access: yesمجلة بغداد للعلوم, 2022
This paper focuses on developing a self-starting numerical approach that can be used for direct integration of higher-order initial value problems of Ordinary Differential Equations.
Olanegan, O. O., Adeyefa, E. O.
doaj   +1 more source

Acceleration of Runge‐Kutta integration schemes

open access: yesDiscrete Dynamics in Nature and Society, Volume 2004, Issue 2, Page 307-314, 2004., 2004
A simple accelerated third‐order Runge‐Kutta‐type, fixed time step, integration scheme that uses just two function evaluations per step is developed. Because of the lower number of function evaluations, the scheme proposed herein has a lower computational cost than the standard third‐order Runge‐Kutta scheme while maintaining the same order of local ...
Phailaung Phohomsiri, Firdaus E. Udwadia
wiley   +1 more source

Generalized solutions of the fractional Burger’s equation

open access: yesResults in Physics, 2019
We investigate the solutions for the fractional Burger’s equation based on the Jumarie fractional derivative using Bernoulli polynomials. We find general solutions for such problems. Comparison with other methods is presented.
Muhammed I. Syam   +4 more
doaj   +1 more source

Gaussian quadrature rules and A‐stability of Galerkin schemes for ODE

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 31, Page 1947-1959, 2003., 2003
The A‐stability properties of continuous and discontinuous Galerkin methods for solving ordinary differential equations (ODEs) are established using properties of Legendre polynomials and Gaussian quadrature rules. The influence on the A‐stability of the numerical integration using Gaussian quadrature rules involving a parameter is analyzed.
Ali Bensebah   +2 more
wiley   +1 more source

Modelling and analysis of fractal-fractional partial differential equations: Application to reaction-diffusion model

open access: yesAlexandria Engineering Journal, 2020
In this paper, an extension is paid to an idea of fractal and fractional derivatives which has been applied to a number of ordinary differential equations to model a system of partial differential equations.
Kolade M. Owolabi   +2 more
doaj   +1 more source

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