Results 11 to 20 of about 159 (69)

High-accuracy numerical scheme for solving the space-time fractional advection-diffusion equation with convergence analysis

open access: yesAlexandria Engineering Journal, 2022
In this paper, the space-time fractional advection-diffusion equation (STFADE) is considered in the finite domain that the time and space derivatives are the Caputo fractional derivative. At first, a quadratic interpolation with convergence order O(τ3-α)
Y. Esmaeelzade Aghdam   +3 more
doaj  

Efficient and Energy Stable Scheme for an Anisotropic Phase-field Dendritic Crystal Growth Model Using the Scalar Auxiliary Variable (SAV) Approach

open access: yes, 2020
The phase-field dendritic crystal growth model is a highly nonlinear system that couples the anisotropic Allen-Cahn type equation and the heat equation.
Xiaofeng Yang sci
semanticscholar   +1 more source

On Multivariate Fractional Taylor’s and Cauchy’ Mean Value Theorem

open access: yesJournal of Mathematical Study, 2019
In this paper, a generalized multivariate fractional Taylor’s and Cauchy’s mean value theorem of the kind f (x,y)= n ∑ j=0 Djα f (x0,y0) Γ(jα+1) +Rn(ξ,η), f (x,y)− n ∑ j=0 Djα f (x0,y0) Γ(jα+1) g(x,y)− n ∑ j=0 Dg(x0,y0) Γ(jα+1) = Rn(ξ,η) Tα n (ξ,η ...
Jinfa Cheng
semanticscholar   +1 more source

Numerical Approximation of the Smoluchowski Equation Using Radial Basis Functions

open access: yesJournal of Computational Mathematics, 2020
The goal of this paper is to present a numerical method for the Smoluchowski equation, a drift-diffusion equation on the sphere, arising in the modelling of particle dynamics. The numerical method uses radial basis functions (RBF).
Christiane Helzel and Maximilian Schneiders sci
semanticscholar   +1 more source

Numerical solutions of time-fractional Klein-Gordon equations by clique polynomials

open access: yesAlexandria Engineering Journal, 2021
This work adopts to the time-fractional Klein–Gordon equation (FKGE) in the Caputo sense. We present a new technique using the clique polynomial as basis function for the operational matrices to obtain solution of time-FKGE.
R.M. Ganji   +3 more
doaj  

PLANE WAVE STABILITY OF THE SPLIT-STEP FOURIER METHOD FOR THE NONLINEAR SCHRÖDINGER EQUATION

open access: yesForum of Mathematics, Sigma, 2014
Plane wave solutions to the cubic nonlinear Schrödinger equation on a torus have recently been shown to behave orbitally stable. Under generic perturbations of the initial data that are small in a high-order Sobolev norm, plane waves are stable over long
ERWAN FAOU   +2 more
doaj   +1 more source

Chebyshev polynomials for solving two dimensional linear and nonlinear integral equations of the second kind

open access: yes, 2012
In this paper, an efficient method is presented for solving two dimensional Fredholm and Volterra integral equations of the second kind. Chebyshev polynomials are applied to approximate a solution for these integral equations.
Z. Avazzadeh, M. Heydari
semanticscholar   +1 more source

Approximations to linear Klein–Gordon Equations using Haar wavelet

open access: yesAin Shams Engineering Journal, 2021
In this research article, two Haar wavelet collocation methods (HWCMs) (namely one dimensional HWCM and two dimensional HWCM) are adapted to approximate linear homogeneous and linear non-homogeneous Klein–Gordon equations.
Sana Ikram   +2 more
doaj  

Numerical treatment of temporal-fractional porous medium model occurring in fractured media

open access: yesJournal of Ocean Engineering and Science, 2023
This paper proposes a temporal-fractional porous medium model (T-FPMM) for describing the co-current and counter-current imbibition, which arises in a water-wet fractured porous media. The correlation between the co-current and counter-current imbibition
R. Meher   +3 more
doaj  

Operational Tau approximation for a general class of fractional integro-differential equations

open access: yes, 2011
In this work, an extension of the algebraic formulation of the operational Tau method (OTM) for the numerical solution of the linear and nonlinear fractional integro-differential equations (FIDEs) is proposed.
S. K. Vanani, A. Aminataei
semanticscholar   +1 more source

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