Results 51 to 60 of about 1,262,805 (184)

On the stable difference scheme for the time delay telegraph equation

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2020
The stable difference scheme for the approximate solution of the initial boundary value problem for the telegraph equation with time delay in a Hilbert space is presented. The main theorem on stability of the difference scheme is established.
A. Ashyralyev, K. Turk, D. Agirseven
doaj   +1 more source

High-order filtered schemes for the Hamilton-Jacobi continuum limit of nondominated sorting [PDF]

open access: yes, 2017
We investigate high-order finite difference schemes for the Hamilton-Jacobi equation continuum limit of nondominated sorting. Nondominated sorting is an algorithm for sorting points in Euclidean space into layers by repeatedly removing minimal elements ...
Calder, Jeff, Thawinrak, Warut
core   +1 more source

On the Loss of L-stability of the Implicit Euler Method for a Linear Problem

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2015
A number of important applied problems of chemical kinetics, biophysics, theory of electrical circuits are described by systems of stiff ordinary differential equations with given initial conditions.
M.V. Bulatov, L.S. Solovarova
doaj  

Numerical Simulation Using Finite-Difference Schemes with Continuous Symmetries for Processes of Gas Flow in Porous Media

open access: yesComputation, 2019
This article presents the applications of continuous symmetry groups to the computational fluid dynamics simulation of gas flow in porous media.
Pavel Markov, Sergey Rodionov
doaj   +1 more source

Extrapolation techniques for first order hyperbolic partial differential equations [PDF]

open access: yes, 1980
A uniform grid of step size h is superimposed on the space variable x in the first order hyperbolic partial differential equation ∂u/∂t + a ∂u/∂x = 0 (a > 0, x > 0, t > 0).
Twizell, E H
core  

Stability of central finite difference schemes for the Heston PDE

open access: yes, 2010
This paper deals with stability in the numerical solution of the prominent Heston partial differential equation from mathematical finance. We study the well-known central second-order finite difference discretization, which leads to large semi-discrete ...
A Böttcher   +14 more
core   +1 more source

TVD finite difference schemes and artificial viscosity [PDF]

open access: yes
The total variation diminishing (TVD) finite difference scheme can be interpreted as a Lax-Wendroff scheme plus an upwind weighted artificial dissipation term. If a particular flux limiter is chosen and the requirement for upwind weighting is removed, an
Davis, S. F.
core   +1 more source

Improving the accuracy of central difference schemes [PDF]

open access: yes
General difference approximations to the fluid dynamic equations require an artificial viscosity in order to converge to a steady state. This artificial viscosity serves two purposes.
Turkel, Eli
core   +1 more source

Fourth order quasi-compact difference schemes for (tempered) space fractional diffusion equations [PDF]

open access: yes, 2014
The continuous time random walk (CTRW) underlies many fundamental processes in non-equilibrium statistical physics. When the jump length of CTRW obeys a power-law distribution, its corresponding Fokker-Planck equation has space fractional derivative ...
Deng, Weihua, Wu, Yujiang, Yu, Yanyan
core  

Numerical study of diffusive fish farm system under time noise

open access: yesScientific Reports
In the current study, the fish farm model perturbed with time white noise is numerically examined. This model contains fish and mussel populations with external food supplied.
Muhammad Waqas Yasin   +8 more
doaj   +1 more source

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