Results 11 to 20 of about 98 (95)

Non-stationary Navier–Stokes equations in 2D power cusp domain

open access: yesAdvances in Nonlinear Analysis, 2021
The initial boundary value problem for the non-stationary Navier-Stokes equations is studied in 2D bounded domain with a power cusp singular point O on the boundary. We consider the case where the boundary value has a nonzero flux over the boundary.
Pileckas Konstantin, Raciene Alicija
doaj   +2 more sources

Global weak solution of 3D-NSE with exponential damping

open access: yesOpen Mathematics, 2022
In this paper, we prove the global existence of incompressible Navier-Stokes equations with damping α(eβ∣u∣2−1)u\alpha \left({e}^{\beta | u{| }^{2}}-1)u, where we use the Friedrich method and some new tools.
Benameur Jamel
doaj   +1 more source

On the problem of detecting source points acting on a fluid

open access: yesDemonstratio Mathematica, 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 analysis
Abdelwahed Mohamed, Chorfi Nejmeddine
doaj   +1 more source

Long time decay for 3D Navier-Stokes equations in Fourier-Lei-Lin spaces

open access: yesOpen Mathematics, 2021
In this paper, we study the long time decay of global solution to the 3D incompressible Navier-Stokes equations. We prove that if u∈C(R+,X−1,σ(R3))u\in {\mathcal{C}}\left({{\mathbb{R}}}^{+},{{\mathcal{X}}}^{-1,\sigma }\left({{\mathbb{R}}}^{3})) is a ...
Jlali Lotfi
doaj   +1 more source

On the uniqueness for weak solutions of steady double-phase fluids

open access: yesAdvances in Nonlinear Analysis, 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 
Abdelwahed Mohamed   +2 more
doaj   +1 more source

Spectral discretization of the time-dependent Navier-Stokes problem with mixed boundary conditions

open access: yesAdvances in Nonlinear Analysis, 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.
Abdelwahed Mohamed, Chorfi Nejmeddine
doaj   +1 more source

A fixed point approach to the semi-linear Stokes problem

open access: yes, 2023
The aim of this paper is to study the Dirichlet problem for semi-linear Stokes equations. The approach of this study is based on the operator method, using abstract results of nonlinear functional analysis.
BRUMAR , David
core   +1 more source

On Bohr's inequality for special subclasses of stable starlike harmonic mappings

open access: yesOpen Mathematics, 2023
The focus of this article is to explore the Bohr inequality for a specific subset of harmonic starlike mappings introduced by Ghosh and Vasudevarao (Some basic properties of certain subclass of harmonic univalent functions, Complex Var. Elliptic Equ. 63 (
Jin Wei   +3 more
doaj   +1 more source

A Recursive Formula for the Reliability of a r‐Uniform Complete Hypergraph and Its Applications

open access: yesMathematical Problems in Engineering, Volume 2018, Issue 1, 2018., 2018
The reliability polynomial R(S, p) of a finite graph or hypergraph S = (V, E) gives the probability that the operational edges or hyperedges of S induce a connected spanning subgraph or subhypergraph, respectively, assuming that all (hyper)edges of S fail independently with an identical probability q = 1 − p.
Ke Zhang   +4 more
wiley   +1 more source

Asymptotic study of Leray solution of 3D-Navier-Stokes equations with exponential damping

open access: yesDemonstratio Mathematica, 2023
We study the uniqueness, the continuity in L2{L}^{2}, and the large time decay for the Leray solutions of the 3D incompressible Navier-Stokes equations with the nonlinear exponential damping term a(eb∣u∣2−1)ua\left({e}^{b| u{| }^{{\bf{2}}}}-1)u, (a,b>0a ...
Blel Mongi, Benameur Jamel
doaj   +1 more source

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