Results 31 to 40 of about 5,859,544 (204)

A finite difference method for a numerical solution of elliptic boundary value problems

open access: yesApplied Mathematics and Nonlinear Sciences, 2018
In this article, we have considered for numerical solution of a Poisson and Laplace equation in a domain. we have presented a novel finite difference method for solving the system of the boundary value problems subject to Dirichlet boundary conditions ...
P. Pandey, S. Jaboob
semanticscholar   +1 more source

Modeling and simulation sedimentation process using finite difference method

open access: yesJournal of the Mechanical Behavior of Materials, 2022
The goal of this research is to develop a numerical model that can be used to simulate the sedimentation process under two scenarios: first, the flocculation unit is on duty, and second, the flocculation unit is out of commission. The general equation of
Naser Mohammed Abed   +1 more
doaj   +1 more source

Efficient interface conditions for the finite difference beam propagation method [PDF]

open access: yes, 1992
It is shown that by adapting the refractive indexes in the vicinity of interfaces, the 2-D beam propagation method based on the finite-difference (FDBPM) scheme can be made much more effective. This holds especially for TM modes propagating in structures
Hoekstra, H.J.W.M.   +2 more
core   +3 more sources

Finite Difference Method for the Reverse Parabolic Problem

open access: yesAbstract and Applied Analysis, 2012
A finite difference method for the approximate solution of the reverse multidimensional parabolic differential equation with a multipoint boundary condition and Dirichlet condition is applied.
Charyyar Ashyralyyev   +2 more
doaj   +1 more source

Complete centered finite difference method for Helmholtz equation [PDF]

open access: yesAnais da Academia Brasileira de Ciências
A new approach in the finite difference framework is developed, which consists of three steps: choosing the dimension of the local approximation subspace, constructing a vector basis for this subspace, and determining the coefficients of the linear ...
GUSTAVO B. ALVAREZ   +2 more
doaj   +1 more source

Modal fields calculation using the finite difference beam propagation method [PDF]

open access: yes, 1994
A method is described to construct modal fields for an arbitrary one- or two-dimensional refractive index structure. An arbitrary starting field is propagated along a complex axis using the slowly varying envelope approximation (SVEA).
de Ridder, R.M.   +4 more
core   +2 more sources

Convergence in Positive Time for a Finite Difference Method Applied to a Fractional Convection-Diffusion Problem

open access: yesComput. Methods Appl. Math., 2017
A standard finite difference method on a uniform mesh is used to solve a time-fractional convection-diffusion initial-boundary value problem. Such problems typically exhibit a mild singularity at the initial time t=0{t=0}.
J. Gracia, E. O'Riordan, M. Stynes
semanticscholar   +1 more source

Non-standard and Numerov finite difference schemes for finite difference time domain method to solve one-dimensional Schrödinger equation

open access: yesJournal of Physics: Theories and Applications, 2018
The purpose of  this paper is to show some improvements of the finite-difference time domain (FDTD) method using Numerov and non-standard finite difference (NSFD) schemes for solving the one-dimensional Schrödinger equation.
Lily Maysari Angraini, I Wayan Sudiarta
doaj   +1 more source

Room Acoustic Simulation Using Finite Difference Time Domain Method [PDF]

open access: yesمجله مدل سازی در مهندسی, 2015
The growing use of industrial machinery, household appliances and etc, has increased undesirable noises. Thus, the need to control and reduce the undesirable noises in a closed space has caused a lot of interest in recent years.
mahdi nili ahmad abadi   +2 more
doaj   +1 more source

The Finite Difference Method Of Discontinuous Constraint Slabs

open access: yesMATEC Web of Conferences, 2016
With the improvement of building standard, structural form becomes more and more complicated. The utility rate of special-shaped column, corner window and cantilever structure is higher and higher, which often makes reinforced concrete floor slabs in a ...
Wang J.C.   +3 more
doaj   +1 more source

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