Results 41 to 50 of about 1,262,805 (184)

On convergence of schemes of finite element method of high accuracy for the equation of heat and moisture transfer

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
In this paper difference schemes of the finite element method of a high order of accuracy for the nonstationary equation of moisture transfer of Aller are constructed and investigated. The increased order of accuracy is achieved through special sampling
D. Utebaev   +2 more
doaj   +1 more source

Finite Difference Schemes for MCM and AMSS

open access: yesImage Processing On Line, 2011
This article refers to algorithms based on finite difference schemes for computing mean and affine curvature evolutions of digital images, introduced by Alvarez and Morel [L. Alvarez, J.M. Morel, “Formalization and computational aspects of image analysis”
Marco Mondelli, Adina Ciomaga
doaj   +1 more source

Lie Symmetries and Exact Solutions of First Order Difference Schemes

open access: yes, 2004
We show that any first order ordinary differential equation with a known Lie point symmetry group can be discretized into a difference scheme with the same symmetry group.
Dorodnitsyn V A   +10 more
core   +1 more source

On the unique weak solvability of second-order unconditionally stable difference scheme for the system of sine-Gordon equations

open access: yesNonlinear Analysis
In the present paper, a nonlinear system of sine-Gordon equations that describes the DNA dynamics is considered. A novel unconditionally stable second-order accuracy difference scheme corresponding to the system of sine-Gordon equations is presented. In
Ozgur Yildirim
doaj   +1 more source

Homogeneous difference schemes [PDF]

open access: yesUSSR Computational Mathematics and Mathematical Physics, 1962
Abstract Homogeneous difference schemes, suitable for transforming differential equations whose coefficients belong to certain classes of function into difference equations, are defined and discussed. The main points which arise are, first, whether the solution of the resulting difference equation converges to that of the original differential ...
Tikhonov, A. N., Samarskiĭ, A. A.
openaire   +2 more sources

Domain decomposition finite element/finite difference method for the conductivity reconstruction in a hyperbolic equation

open access: yes, 2015
We present domain decomposition finite element/finite difference method for the solution of hyperbolic equation. The domain decomposition is performed such that finite elements and finite differences are used in different subdomains of the computational ...
Beilina, L.
core   +1 more source

Conservative Semidiscrete Difference Schemes for Timoshenko Systems

open access: yesJournal of Applied Mathematics, 2014
We present a parameterized family of finite-difference schemes to analyze the energy properties for linearly elastic constant-coefficient Timoshenko systems considering shear deformation and rotatory inertia.
D. S. Almeida Júnior
doaj   +1 more source

Two Conservative Difference Schemes for Rosenau-Kawahara Equation

open access: yesAdvances in Mathematical Physics, 2014
Two conservative finite difference schemes for the numerical solution of the initialboundary value problem of Rosenau-Kawahara equation are proposed. The difference schemes simulate two conservative quantities of the problem well.
Jinsong Hu   +3 more
doaj   +1 more source

Difference schemes with point symmetries and their numerical tests

open access: yes, 2006
Symmetry preserving difference schemes approximating second and third order ordinary differential equations are presented. They have the same three or four-dimensional symmetry groups as the original differential equations. The new difference schemes are
A Bourlioux   +15 more
core   +1 more source

Boundary-value problem with free boundary: zirconium alloy hydrogenation

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2016
One of the most important requirements for the reactor’s active zone materials (made of zirconium alloys) is low hydrogen absorptivity since hydrogen embrittlement may cause zirconium cladding damage.
Yury Zaika, Natalia Rodchenkova
doaj   +1 more source

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