Results 1 to 10 of about 1,758,948 (170)

A Nodal Immersed Finite Element-Finite Difference Method. [PDF]

open access: yesJ Comput Phys, 2023
The immersed finite element-finite difference (IFED) method is a computational approach to modeling interactions between a fluid and an immersed structure. This method uses a finite element (FE) method to approximate the stresses and forces on a structural mesh and a finite difference (FD) method to approximate the momentum of the entire fluid ...
Wells D   +3 more
europepmc   +5 more sources

Finite difference magnetoelastic simulator. [PDF]

open access: yesOpen Res Eur, 2021
We describe an extension of the micromagnetic finite difference simulation software MuMax3 to solve elasto-magneto-dynamical problems. The new module allows for numerical simulations of magnetization and displacement dynamics in magnetostrictive materials and structures, including both direct and inverse magnetostriction.
Vanderveken F   +7 more
europepmc   +4 more sources

Finite-Difference Operators for 2D problems [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
This paper presents the concept of using algorithms for reducing the dimensions of finite-difference equations of two-dimensional (2D) problems, for second-order partial differential equations.
T. Sobczyk
doaj   +1 more source

Multiplicative finite difference methods [PDF]

open access: yesQuarterly of Applied Mathematics, 2009
Based on multiplicative calculus, the finite difference schemes for the numerical solution of multiplicative differential equations and Volterra differential equations are presented. Sample problems were solved using these new approaches.
Rıza, Mustafa   +2 more
openaire   +5 more sources

Higher order approximation in exponential form based on half-step grid-points for 2D quasilinear elliptic BVPs on a variant domain

open access: yesMethodsX, 2023
This paper reports a new fourth order Finite Difference Method (FDM) in exponential form for two-dimensional quasilinear boundary value problem of elliptic type (BVPE) with variant solution domain.
Nikita Setia, R.K. Mohanty
doaj   +1 more source

Finite difference schemes with monotone operators

open access: yesAdvances in Difference Equations, 2004
Several existence theorems are given for some second-order difference equations associated with maximal monotone operators in Hilbert spaces. Boundary conditions of monotone type are attached.
N. C. Apreutesei
doaj   +2 more sources

A parameter uniform method for two-parameter singularly perturbed boundary value problems with discontinuous data

open access: yesMethodsX, 2023
We consider two-parameter singularly perturbed problems of reaction-convection-diffusion type in one dimension. The convection coefficient and source term are discontinuous at a point in the domain.
Nirmali Roy, Anuradha Jha
doaj   +1 more source

A mathematical system of COVID-19 disease model: Existence, uniqueness, numerical and sensitivity analysis

open access: yesMethodsX, 2023
A compartmental mathematical model of spreading COVID-19 disease in Wuhan, China is applied to investigate the pandemic behaviour in Iran. This model is a system of seven ordinary differential equations including individual behavioural reactions ...
Khadijeh Sadri   +2 more
doaj   +1 more source

A two-dimensional linear elasticity problem for anisotropic materials, solved with a parallelization code [PDF]

open access: yesINCAS Bulletin, 2010
The present paper introduces a numerical approach of static linear elasticity equations for anisotropic materials. The domain and boundary conditions are simple, to enhance an easy implementation of the finite difference scheme. SOR and gradient are used
Mihai-Victor PRICOP, Cornelia NIŢǍ
doaj   +1 more source

Conservative finite difference schemes for dynamical systems

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2022
The article presents the implementation of one of the approaches to the integration of dynamical systems, which preserves algebraic integrals in the original fdm for Sage system.
Yu Ying, Zhen Lu
doaj   +1 more source

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