Zobrazeno 1 - 10
of 285
pro vyhledávání: '"Chorfi Nejmeddine"'
Autor:
Abdelwahed Mohamed, Chorfi Nejmeddine
Publikováno v:
Demonstratio Mathematica, Vol 56, Iss 1, Pp 385-397 (2023)
The detection problem of a finite number of source points acting on a steady incompressible fluid flow from overdetermined boundary data was studied. The approach used in this study deals with the topological sensitivity technique. An asymptotic anal
Externí odkaz:
https://doaj.org/article/8c59d852a450417387a8d852195d2a46
Autor:
Abdelwahed Mohamed, Chorfi Nejmeddine
Publikováno v:
Advances in Nonlinear Analysis, Vol 12, Iss 1, Pp 1-6 (2023)
In this work, we consider the topological gradient method to deal with an inverse problem associated with three-dimensional Stokes equations. The problem consists in detecting unknown point forces acting on fluid from measurements on the boundary of
Externí odkaz:
https://doaj.org/article/648baf7d8bbf46a08a4f495ea927d5fa
Autor:
Abdelwahed Mohamed, Chorfi Nejmeddine
Publikováno v:
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 30, Iss 3, Pp 5-20 (2022)
In this paper we deal with the discretization of the second order wave equation by the implicit Euler scheme for the time and the spectral method for the space. We prove that the time semi discrete and the full discrete problems are well posed. We sh
Externí odkaz:
https://doaj.org/article/497926d9235b494babfb4f1336aa9333
Autor:
Abdelwahed Mohamed, Chorfi Nejmeddine
Publikováno v:
Advances in Nonlinear Analysis, Vol 11, Iss 1, Pp 1447-1465 (2022)
In this work, we handle a time-dependent Navier-Stokes problem in dimension three with a mixed boundary conditions. The variational formulation is written considering three independent unknowns: vorticity, velocity, and pressure. We use the backward
Externí odkaz:
https://doaj.org/article/029ee64160f5432bae7ab3974aafd34f
Publikováno v:
Advances in Nonlinear Analysis, Vol 11, Iss 1, Pp 454-468 (2021)
We consider a double-phase non-Newtonian fluid, described by a stress tensor which is the sum of a p-Stokes and a q-Stokes stress tensor, with 1 2 to justify calculations for weak solutions. Results are obtained through a careful use of the symmetrie
Externí odkaz:
https://doaj.org/article/e7c3e89a04e34c2685aa4bf98a1dffae
Autor:
Abdelwahed Mohamed, Chorfi Nejmeddine
Publikováno v:
Advances in Nonlinear Analysis, Vol 10, Iss 1, Pp 477-493 (2020)
The paper deals with a posteriori analysis of the spectral element discretization of a non linear heat equation. The discretization is based on Euler’s backward scheme in time and spectral discretization in space. Residual error indicators related
Externí odkaz:
https://doaj.org/article/b58eeaba11e44458b069bcea7f3e5cf4
Publikováno v:
Advances in Nonlinear Analysis, Vol 9, Iss 1, Pp 1402-1419 (2020)
In this paper we propose some new non-uniformly-elliptic/damping regularizations of the Navier-Stokes equations, with particular emphasis on the behavior of the vorticity. We consider regularized systems which are inspired by the Baldwin-Lomax and by
Externí odkaz:
https://doaj.org/article/8c9376ae23334e8c8bf6df7fea8847a5
Autor:
Abdelwahed Mohamed, Chorfi Nejmeddine
Publikováno v:
Advances in Nonlinear Analysis, Vol 9, Iss 1, Pp 1145-1160 (2019)
In this paper, we consider a heat equation with diffusion coefficient that varies depending on the heterogeneity of the domain. We propose a spectral elements discretization of this problem with the mortar domain decomposition method on the space var
Externí odkaz:
https://doaj.org/article/8ff01754c65e4b6590b18d91e4ac46f3
Publikováno v:
Advanced Nonlinear Studies, Vol 17, Iss 4, Pp 781-792 (2017)
We are concerned with the study of a class of non-autonomous eigenvalue problems driven by two non-homogeneous differential operators with variable (p1,p2){(p_{1},p_{2})}-growth. The main result of this paper establishes the existence of a continuous
Externí odkaz:
https://doaj.org/article/a9cb1f08f2b044cd9524d9e209c7e90a
Autor:
Srivastava, Hari Mohan, Sabir, Pishtiwan Othman, Eker, Sevtap Sümer, Wanas, Abbas Kareem, Mohammed, Pshtiwan Othman, Chorfi, Nejmeddine, Baleanu, Dumitru
The Ruscheweyh derivative operator is used in this paper to introduce and investigate interesting general subclasses of the function class $\Sigma_{\mathrm{m}}$ of $m$-fold symmetric bi-univalent analytic functions. Estimates of the initial Taylor-Ma
Externí odkaz:
http://arxiv.org/abs/2304.11571
