Results 21 to 30 of about 14,242,248 (191)

Robust numerical method for singularly perturbed convection-diffusion type problems with non-local boundary condition

open access: yesMathematical Modelling and Analysis, 2022
This paper presents the study of singularly perturbed differential equations of convection diffusion type with non-local boundary condition. The proposed numerical scheme is a combination of classical finite difference method for the initial boundary ...
Habtamu G. Debela   +2 more
doaj   +1 more source

A hybrid fractional optimal control for a novel Coronavirus (2019-nCov) mathematical model

open access: yesJournal of Advanced Research, 2021
Introduction: Coronavirus COVID-19 pandemic is the defining global health crisis of our time and the greatest challenge we have faced since world war two. To describe this disease mathematically, we noted that COVID-19, due to uncertainties associated to
N.H. Sweilam   +2 more
doaj   +1 more source

An Efficient Nonstandard Finite Difference Scheme for Chaotic Fractional-Order Chen System

open access: yesIEEE Access, 2020
In this paper, an efficient nonstandard finite difference scheme for the numerical solution of chaotic fractional-order Chen system is developed. In the new method, an appropriate nonlocal framework in conjunction with the Grünwald-Letnikov ...
Beijia Wang, Liang Li, Yaowu Wang
doaj   +1 more source

Moving Mesh Non-standard Finite Difference Method for Non-linear Heat Transfer in a Thin Finite Rod [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2018
In this paper, a moving mesh technique and a non-standard finite difference method are combined, and a moving mesh non-standard finite difference (MMNSFD) method is developed to solve an initial boundary value problem involving a quartic nonlinearity ...
Morteza Bisheh-Niasar, Maryam Arab Ameri
doaj   +1 more source

A Modified Equation Approach to Selecting a Nonstandard Finite Difference Scheme Applied to the Regularized Long Wave Equation

open access: yesAbstract and Applied Analysis, 2014
Two nonstandard finite difference schemes are derived to solve the regularized long wave equation. The criteria for choosing the “best” nonstandard approximation to the nonlinear term in the regularized long wave equation come from considering the ...
E. Momoniat
doaj   +1 more source

Nonstandard finite difference method for nonlinear Riesz space fractional reaction-diffusion equation

open access: yes, 2019
In this paper, a modified nonstandard finite difference method for the two-dimensional Riesz space fractional reaction-diffusion equations is developed.
Gao, Hao   +5 more
core   +7 more sources

A Fourth-Order Compact Finite Difference Scheme for Solving the Time Fractional Carbon Nanotubes Model

open access: yesThe Scientific World Journal, 2022
In this work, we deal with unsteady magnetohydrodynamic allowed convection inflow of blood with a carbon nanotubes model; the single and multiwalled carbon nanotubes of human blood are used as a based fluid. Two numerical methods used to study this model
N. H. Sweilam   +3 more
doaj   +1 more source

A New Numerical Scheme for Time Fractional Diffusive SEAIR Model with Non-Linear Incidence Rate: An Application to Computational Biology

open access: yesFractal and Fractional, 2022
In this paper, we propose a modified fractional diffusive SEAIR epidemic model with a nonlinear incidence rate. A constructed model of fractional partial differential equations (PDEs) is more general than the corresponding model of fractional ordinary ...
Yasir Nawaz   +2 more
doaj   +1 more source

Dynamically Consistent NSFD Methods for Predator-prey System [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2021
In this paper, we introduce two nonstandard finite difference (NSFD) methods for solving the mathematical model of the Rosenzweig-MacArthur predator-prey system.
Ali Shokri   +2 more
doaj   +1 more source

Nonstandard finite difference methods preserving general quadratic Lyapunov functions

open access: yesCoRR, 2023
In this work, we consider a class of dynamical systems described by ordinary differential equations under the assumption that the global asymptotic stability (GAS) of equilibrium points is established based on the Lyapunov stability theory with the help of quadratic Lyapunov functions.
openaire   +2 more sources

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