Results 1 to 10 of about 1,739,887 (337)

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   +5 more sources

Difference sets in a finite group [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1955
R. H. Bruck
openalex   +3 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

Finite Difference of Adjoint or Adjoint of Finite Difference? [PDF]

open access: yesMonthly Weather Review, 1997
Abstract Adjoint models are used for atmospheric and oceanic sensitivity studies in order to efficiently evaluate the sensitivity of a cost function (e.g., the temperature or pressure at some target time tf, averaged over some region of interest) with respect to the three-dimensional model initial conditions. The time-dependent sensitivity, that is the
Sirkes, Ziv, Tziperman, Eli
openaire   +1 more source

Fractional discrete-continuous model of heat transfer process [PDF]

open access: yesArchives of Control Sciences, 2021
The paper proposes a new, state space, finite dimensional, fractional order model of a heat transfer in one dimensional body. The time derivative is described by Caputo operator.
Krzysztof Oprzędkiewicz   +1 more
doaj   +1 more source

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

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