Results 11 to 20 of about 331,405 (340)

Revisiting the Reynolds-averaged Navier–Stokes equations

open access: yesOpen Physics, 2022
This study revisits the Reynolds-averaged Navier–Stokes (RANS) equations and finds that the existing literature is erroneous regarding the primary unknowns and the number of independent unknowns in the RANS. The literature claims that the Reynolds stress
Sun Bohua
doaj   +1 more source

The pullback attractor for the 2D g-Navier-Stokes equation with nonlinear damping and time delay

open access: yesAIMS Mathematics, 2023
In this article, the global well-posedness of weak solutions for 2D non-autonomous g-Navier-Stokes equations on some bounded domains were investigated by the Faedo-Galerkin method.
Xiaoxia Wang, Jinping Jiang
doaj   +1 more source

Recasting Navier–Stokes equations

open access: yesJournal of Physics Communications, 2019
Abstract Classical Navier–Stokes equations fail to describe some flows in both the compressible and incompressible configurations. In this article, we propose a new methodology based on transforming the fluid mass velocity vector field to obtain a new class of continuum models.
M H Lakshminarayana Reddy   +4 more
openaire   +3 more sources

A Liouville theorem for the planer Navier-Stokes equations with the no-slip boundary condition and its application to a geometric regularity criterion [PDF]

open access: yes, 2013
We establish a Liouville type result for a backward global solution to the Navier-Stokes equations in the half plane with the no-slip boundary condition. No assumptions on spatial decay for the vorticity nor the velocity field are imposed.
Giga, Yoshikazu   +2 more
core   +2 more sources

2D constrained Navier–Stokes equations

open access: yesJournal of Differential Equations, 2018
We study 2D Navier-Stokes equations with a constraint on $L^2$ energy of the solution. We prove the existence and uniqueness of a global solution for the constrained Navier-Stokes equation on $\R^2$ and $\T$, by a fixed point argument. We also show that the solution of constrained Navier-Stokes converges to the solution of Euler equation as viscosity $
Brzezniak, Zdzislaw   +2 more
openaire   +5 more sources

Generalized Navier–Stokes equations and soft hairy horizons in fluid/gravity correspondence

open access: yesNuclear Physics B, 2021
The fluid/gravity correspondence establishes how gravitational dynamics, as dictated by Einstein's field equations, are related to the fluid dynamics, governed by the relativistic Navier–Stokes equations.
A.J. Ferreira–Martins, R. da Rocha
doaj   +1 more source

Global existence of strong solutions to compressible Navier-Stokes-Korteweg equations with external potential force

open access: yesAIMS Mathematics, 2023
In this article, we consider a three dimensional compressible Navier-Stokes-Korteweg equations with the effect of external potential force. Under the smallness assumptions on both the external potential force and the initial perturbation of the ...
Kaile Chen, Yunyun Liang, Nengqiu Zhang
doaj   +1 more source

Stochastic Navier-Stokes-Fourier equations [PDF]

open access: yesIndiana University Mathematics Journal, 2020
We study the full Navier--Stokes--Fourier system governing the motion of a general viscous, heat-conducting, and compressible fluid subject to stochastic perturbation. Stochastic effects are implemented through (i) random initial data, (ii) a forcing term in the momentum equation represented by a multiplicative white noise, (iii) random heat source in ...
Breit, D., Feireisl, E. (Eduard)
openaire   +3 more sources

Average Process of Fractional Navier–Stokes Equations with Singularly Oscillating Force

open access: yesFractal and Fractional, 2022
The averaging process between two-dimensional fractional Navier–Stokes equations driven by a singularly oscillating external force and the averaged equations corresponding to the limiting case are investigated.
Chunjiao Han   +3 more
doaj   +1 more source

Linearization of the Navier-Stokes equations [PDF]

open access: yesE3S Web of Conferences, 2020
This paper studies mathematical models of the heat transfer process of a viscous incompressible fluid. Optimal control methods are used to solve the problem of optimal modeling.
Nazarov Serdar   +2 more
doaj   +1 more source

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