Results 21 to 30 of about 4,941,141 (298)
Numerical solution to Bitsadze-Samarskii type elliptic overdetermined multipoint NBVP
Boundary Value Problems, 2017 This paper is devoted to a Bitsadze-Samarskii type overdetermined multipoint nonlocal boundary value problem (NBVP). This inverse problem is reduced to an auxiliary multipoint NBVP.
Charyyar Ashyralyyev
doaj +1 more source
Mathematical modeling of the energy consumption problem
Қарағанды университетінің хабаршысы. Математика сериясы, 2022 The importance of energy-saving and correct design is obvious for energy efficiency. Correct design means that before construction considerable things, such as orientation or isolation decisions, need to be made. This study gives a mathematical model of
A. Ashyralyev +2 more
doaj +1 more source
A high order accurate difference scheme for complex flow fields [PDF]
, 1997 A high order accurate finite difference method for direct numerical simulation of coherent structure in the mixing layers is presented. The reason for oscillation production in numerical solutions is analyzed, It is caused by a nonuniform group velocity ...
马延文 +2 more
core +1 more source
THE STATE OF THE PROBLEM OF THE JOINT MOVEMENT OF FLUID IN THE PORE SPACE
Вестник КазНУ. Серия математика, механика, информатика, 2022 This article discusses the problems of studying the issue of joint motion of liquids in the porous space. The article provides the construction of a mathematical model of the theory of ltration, which describes phase transitions.
A. A. Mussina +2 more
doaj +1 more source
On Monotonicity of Difference Schemes for Computational Physics [PDF]
SIAM Journal on Scientific Computing, 2004 Criteria are developed for monotonicity of linear as well as nonlinear difference schemes associated with the numerical analysis of systems of partial differential equations, integrodifferential equations, etc. Difference schemes are converted into variational forms that satisfy the boundary maximum principle and also allow the investigation of ...
Vyacheslav Borisov, Shaul Sorek
openaire +2 more sources
Nonlinear Analysis, 2014 We consider the Poisson equation in a rectangular domain. Instead of the classical specification of boundary data, we impose an integral constraints on the inner stripe adjacent to boundary having the width ξ.
Givi Berikelashvilia, Nodar Khomeriki
doaj +1 more source
Stability for inhomogeneous difference schemes [PDF]
Proceedings of the American Mathematical Society, 1961 where u is a (possibly vector-valued) unknown function of a real "time" variable t and an N-dimensional real vector "space" variable x. Here A is a linear operator, constant2 in t, operating on u, where u is considered a function of x alone (i.e., A acts on elements of a linear space 63 and, for each value of t, u(., t) C 63). The function f is a known
openaire +2 more sources
A novel difference schemes for analyzing the fractional Navier-Stokes equations
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017 In this report, a novel difference scheme is used to analyzing the Navier - Stokes problems of fractional order. Existence and uniqueness of the suggested approach with a Lipschitz condition and Picard theorem are proved.
Sayevand Khosro +2 more
doaj +1 more source
On fourth order accuracy stable difference scheme for a multi-point overdetermined elliptic problem
Қарағанды университетінің хабаршысы. Математика сериясы, 2021 In this paper fourth order of accuracy difference scheme for approximate solution of a multi-point elliptic overdetermined problem in a Hilbert space is proposed.
C. Ashyralyyev, G. Akyuz
doaj +1 more source
Exact and nonstandard finite difference schemes for the generalized KdV–Burgers equation
Advances in Difference Equations, 2020 We consider the generalized KdV–Burgers KdVB ( p , m , q ) $\operatorname{KdVB}(p,m,q)$ equation. We have designed exact and consistent nonstandard finite difference schemes (NSFD) for the numerical solution of the KdVB ( 2 , 1 , 2 ) $\operatorname{KdVB}(
C. Koroglu
doaj +1 more source