Results 21 to 30 of about 1,681 (56)

A Data Assimilation Algorithm for the Subcritical Surface Quasi-Geostrophic Equation

open access: yesAdvanced Nonlinear Studies, 2017
In this article, we prove that data assimilation by feedback nudging can be achieved for the three-dimensional quasi-geostrophic equation in a simplified scenario using only large spatial scale observables on the dynamical boundary.
Jolly Michael S.   +2 more
doaj   +1 more source

Optimality of Serrin type extension criteria to the Navier-Stokes equations

open access: yesAdvances in Nonlinear Analysis, 2021
We prove that a strong solution u to the Navier-Stokes equations on (0, T) can be extended if either u ∈ Lθ(0, T; U˙∞,1/θ,∞−α$\begin{array}{} \displaystyle \dot{U}^{-\alpha}_{\infty,1/\theta,\infty} \end{array}$) for 2/θ + α = 1, 0 < α < 1 or u ∈ L2(0, T;
Farwig Reinhard, Kanamaru Ryo
doaj   +1 more source

Short-time existence of a quasi-stationary fluid–structure interaction problem for plaque growth

open access: yesAdvances in Nonlinear Analysis, 2023
We address a quasi-stationary fluid–structure interaction problem coupled with cell reactions and growth, which comes from the plaque formation during the stage of the atherosclerotic lesion in human arteries.
Abels Helmut, Liu Yadong
doaj   +1 more source

An almost sure energy inequality for Markov solutions to the 3D Navier-Stokes equations

open access: yes, 2009
We prove existence of weak martingale solutions satisfying an almost sure version of the energy inequality and which constitute a (almost sure) Markov process.Comment: Submitted for the proceedings of the conference "Stochastic partial differential ...
Romito, Marco
core   +1 more source

Continuous, Semi-discrete, and Fully Discretized Navier-Stokes Equations

open access: yes, 2018
The Navier--Stokes equations are commonly used to model and to simulate flow phenomena. We introduce the basic equations and discuss the standard methods for the spatial and temporal discretization.
AJ Chorin   +37 more
core   +1 more source

Asymptotic analysis of Leray solution for the incompressible NSE with damping

open access: yesDemonstratio Mathematica
In 2008, Cai and Jiu showed that the Cauchy problem of the Navier-Stokes equations, with damping α∣u∣β−1u\alpha {| u| }^{\beta -1}u for α>0\alpha \gt 0 and β≥1\beta \ge 1 has global weak solutions in L2(R3){L}^{2}\left({{\mathbb{R}}}^{3}).
Blel Mongi, Benameur Jamel
doaj   +1 more source

A Liouville theorem for the Degasperis-Procesi equation [PDF]

open access: yes, 2015
We prove that the only global, strong, spatially periodic solution to the Degasperis-Procesi equation, vanishing at some point (t0, x0), is the identically zero solution.
Brandolese, Lorenzo
core  

Vanishing viscosity limits for the degenerate lake equations with Navier boundary conditions

open access: yes, 2011
The paper is concerned with the vanishing viscosity limit of the two-dimensional degenerate viscous lake equations when the Navier slip conditions are prescribed on the impermeable boundary of a simply connected bounded regular domain.
Bresch D   +10 more
core   +1 more source

On an Oberbeck-Boussinesq model relating to the motion of a viscous fluid subject to heating

open access: yesOpen Mathematics
This article surveys some results in the study of Iannelli [Su un modello di Oberbeck-Boussinesq relativo al moto di un fluido viscoso soggetto a riscaldamento, Fisica Matematica, Istituto Lombardo (rend.
Iannelli Angela
doaj   +1 more source

On the Leray-Hopf Extension Condition for the Steady-State Navier-Stokes Problem in Multiply-Connected Bounded Domains [PDF]

open access: yes, 2013
Employing the approach of A. Takeshita [Pacific J. Math., Vol. 157 (1993), 151--158], we give an elementary proof of the invalidity of the Leray-Hopf Extension Condition for certain multiply connected bounded domains of R^n, n=2,3, whenever the flow ...
Galdi, Giovanni P.
core  

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