Results 11 to 20 of about 139 (72)

Weak-strong uniqueness and energy-variational solutions for a class of viscoelastoplastic fluid models

open access: yesAdvances in Nonlinear Analysis, 2022
We study a model for a fluid showing viscoelastic and viscoplastic behavior, which describes the flow in terms of the fluid velocity and a symmetric deviatoric stress tensor.
Eiter Thomas   +2 more
doaj   +1 more source

Remark on the Lifespan of Solutions to 3-D Anisotropic Navier Stokes Equations

open access: yesCommunications in Mathematical Research, 2020
The goal of this article is to provide a lower bound for the lifespan of smooth solutions to 3-D anisotropic incompressible Navier-Stokes system, which in particular extends a similar type of result for the classical 3-D incompressible Navier-Stokes ...
Siyu Liang
semanticscholar   +1 more source

Log Improvement of the Prodi-Serrin Criteria for Navier-Stokes Equations [PDF]

open access: yes, 2007
This article is devoted to a Log improvement of Prodi-Serrin criterion for global regularity to solutions to Navier-Stokes equations in dimension 3. It is shown that the global regularity holds under the condition that |u|/(log(1+|u|)) is integrable in ...
C. Chan, A. Vasseur
semanticscholar   +1 more source

Stability of stationary solutions to the three-dimensional Navier-Stokes equations with surface tension

open access: yesAdvances in Nonlinear Analysis, 2023
This article studies the stability of a stationary solution to the three-dimensional Navier-Stokes equations in a bounded domain, where surface tension effects are taken into account.
Watanabe Keiichi
doaj   +1 more source

On the existence of weak solutions for the initial‐boundary value problem in the Jeffreys model of motion of a viscoelastic medium

open access: yesAbstract and Applied Analysis, Volume 2004, Issue 10, Page 815-829, 2004., 2004
This paper deals with the initial‐boundary value problem for the system of motion equations of an incompressible viscoelastic medium with Jeffreys constitutive law in an arbitrary domain of two‐dimensional or three‐dimensional space. The existence of weak solutions of this problem is obtained.
D. A. Vorotnikov, V. G. Zvyagin
wiley   +1 more source

Existence of weak solutions for a scale similarity model of the motion of large eddies in turbulent flow

open access: yesJournal of Applied Mathematics, Volume 2003, Issue 9, Page 429-446, 2003., 2003
In turbulent flow, the normal procedure has been seeking means u¯ of the fluid velocity u rather than the velocity itself. In large eddy simulation, we use an averaging operator which allows for the separation of large‐ and small‐length scales in the flow field. The filtered field u¯ denotes the eddies of size O(δ) and larger.
Meryem Kaya
wiley   +1 more source

Regularity Criteria on the 2D Anisotropic Magnetic Bénard Equations

open access: yesJournal of Mathematical Study, 2019
In this paper, we study the global regularity issue of two dimensional incompressible magnetic Bénard equations with partial dissipation and magnetic diffusion.
Dipendra Sharma
semanticscholar   +1 more source

On a viscous two-fluid channel flow including evaporation

open access: yesOpen Mathematics, 2018
In this contribution a particular plane steady-state channel flow including evaporation effects is investigated from analytical point of view. The channel is assumed to be horizontal.
Socolowsky Jürgen
doaj   +1 more source

On the analysis of a geometrically selective turbulence model

open access: yesAdvances in Nonlinear Analysis, 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 the
Chorfi Nejmeddine   +2 more
doaj   +1 more source

An inverse problem of identifying the coefficient in Kelvin-Voight equations

open access: yes, 2015
In this paper, the existence and uniqueness of strong solution of the inverse problem of determining the right-hand side of pseudoparabolic equation describing the motion of Kelvin-Voight fluids is investigated.
U. Abylkairov, Kh. Khompysh
semanticscholar   +1 more source

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