Results 21 to 30 of about 1,256,496 (287)

Numerical method for solving an initial-boundary value problem for a multidimensional loaded parabolic equation of a general form with conditions of the third kind [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2022
An initial-boundary value problem is studied for a multidimensional loaded parabolic equation of general form with boundary conditions of the third kind. For a numerical solution, a locally one-dimensional difference scheme by A.A.Samarskii with order of
Zaryana Beshtokova
doaj   +1 more source

Higher order finite difference schemes for the magnetic induction equations [PDF]

open access: yes, 2010
We describe high order accurate and stable finite difference schemes for the initial-boundary value problem associated with the magnetic induction equations. These equations model the evolution of a magnetic field due to a given velocity field.
B. Gustafsson   +22 more
core   +2 more sources

EXPRESS MODEL FOR WATER TREATMENT PROCESS CALCULATION

open access: yesNauka ta progres transportu, 2020
Purpose. The use of a physical experiment to study mass transfer processes in structures used in water supply and sewage systems requires considerable time and is very expensive.
V. D. Petrenko   +5 more
doaj   +1 more source

On some difference schemes and entropy conditions for a class ofmulti-species kinematic flow models with discontinuous flux

open access: yesNetworks and Heterogeneous Media, 2010
We study a system of conservation laws that describesmulti-species kinematic flows with an emphasis onmodels of multiclass traffic flow and of the creaming of oil-in-waterdispersions.
Raimund Bürger   +2 more
doaj   +1 more source

Error bounds for monotone approximation schemes for parabolic Hamilton-Jacobi-Bellman equations [PDF]

open access: yes, 2006
We obtain non-symmetric upper and lower bounds on the rate of convergence of general monotone approximation/numerical schemes for parabolic Hamilton Jacobi Bellman Equations by introducing a new notion of consistency.
Barles, Guy, Jakobsen, Espen R.
core   +4 more sources

Weak solutions of unconditionally stable second-order difference schemes for nonlinear sine-Gordon systems [PDF]

open access: yesE-Journal of Analysis and Applied Mathematics
This paper presents the existence and uniqueness of the weak solution for the nonlinear system of sine-Gordon equations which describes DNA dynamics.
Ozgur Yildirim
doaj   +1 more source

A fully implicit non-standard finite difference scheme for one dimensional Burgers' equation

open access: yesJournal of Applied Research on Industrial Engineering, 2020
In this paper we have studied a numerical approximation to the solution of the nonlinear Burgers' equation. The presented scheme is obtained by using the Non-Standard Finite Difference Method (NSFD).
Abdolrahman Yaghoobi   +1 more
doaj   +1 more source

On conjugate difference schemes: the midpoint scheme and the trapezoidal scheme

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2021
The preservation of quadratic integrals on approximate solutions of autonomous systems of ordinary differential equations x=f(x), found by the trapezoidal scheme, is investigated.
Yu Ying, Mikhail D. Malykh
doaj   +1 more source

Mixture Designs Generated by Orthogonal Arrays Developed Using Difference Schemes [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2020
This paper presents an algorithm for constructing mixture designs based on orthogonal arrays developed using difference schemes. The algorithm can also be applied to constrained mixture experiments.
Poonam Singh, Vandana Sarin, Neha Midha
doaj   +1 more source

Solution of the mixed boundary problem for the Poisson equation on two-dimensional irregular domains

open access: yesInformatika, 2023
Objectives. A finite-difference computational algorithm is proposed for solving a mixed boundary-value problem for the Poisson equation given in two-dimensional irregular domains.Methods. To solve the problem, generalized curvilinear coordinates are used.
M. M. Chuiko, O. M. Korolyova
doaj   +1 more source

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