Results 31 to 40 of about 2,785 (130)

Renormalized solutions of the 2d Euler equations [PDF]

open access: yes, 2014
In this paper we prove that solutions of the 2D Euler equations in vorticity formulation obtained via vanishing viscosity approximation are ...
Crippa, Gianluca, Spirito, Stefano
core   +2 more sources

Global well-posedness for the critical 2D dissipative quasi-geostrophic equation [PDF]

open access: yes, 2006
We give an elementary proof of the global well-posedness for the critical 2D dissipative quasi-geostrophic equation. The argument is based on a non-local maximum principle involving appropriate moduli of continuity.Comment: 7 ...
A. Cordoba   +8 more
core   +2 more sources

Global Well-Posedness for 2-D Viscoelastic Fluid Model [PDF]

open access: yes, 2016
This paper is concerned with a mathematical model which describes 2-D flows of an incompressible viscoelastic fluid of Oldroyd type in a bounded domain.
Artemov, Mikhail A.   +1 more
core   +1 more source

The continuum limit of Follow-the-Leader models - a short proof [PDF]

open access: yes, 2017
We offer a simple and self-contained proof that the Follow-the-Leader model converges to the Lighthill-Whitham-Richards model for traffic ...
Holden, Helge, Risebro, Nils Henrik
core   +2 more sources

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

Existence and uniqueness of global solutions for the modified anisotropic 3D Navier-Stokes equations [PDF]

open access: yes, 2016
We study a modified three-dimensional incompressible anisotropic Navier-Stokes equations. The modification consists in the addition of a power term to the nonlinear convective one.
Bessaih, Hakima   +2 more
core   +2 more sources

Global boundedness to a 3D chemotaxis-Stokes system with porous medium cell diffusion and general sensitivity

open access: yesAdvances in Nonlinear Analysis, 2022
In this article, we will develop an analytical approach to construct the global bounded weak solutions to the initial-boundary value problem of a three-dimensional chemotaxis-Stokes system with porous medium cell diffusion Δnm\Delta {n}^{m} for m≥6563m ...
Tian Yu, Xiang Zhaoyin
doaj   +1 more source

NUMERICAL INVESTIGATION OF PRESSURE HEAD JUMP VALUES ON A THIN INCLUSION IN ONE-DIMENSIONAL NON-LINEAR SOIL MOUSTURE TRANSPORT PROBLEM

open access: yesInternational Journal of Apllied Mathematics, 2018
A non-linear process of moisture transport in the soil containing thin inclusions has been investigated. The corresponding one-dimensional boundary value problem has been solved numerically with the finite element method.
P. Martyniuk   +3 more
semanticscholar   +1 more source

Asymptotic expansion of small analytic solutions to the quadratic nonlinear Schrödinger equations in two‐dimensional spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 29, Issue 9, Page 501-516, 2002., 2002
We study asymptotic behavior in time of global small solutions to the quadratic nonlinear Schrödinger equation in two‐dimensional spaces i∂tu + (1/2)Δu = 𝒩(u), (t, x) ∈ ℝ × ℝ2; u(0, x) = φ(x), x ∈ ℝ2, where 𝒩(u)=Σj,k=12(λjk(∂xju)(∂xku)+μjk(∂xju¯)(∂xku¯)), where λjk, μjk ∈ ℂ.
Nakao Hayashi, Pavel I. Naumkin
wiley   +1 more source

Inviscid, zero Froude number limit of the viscous shallow water system

open access: yesOpen Mathematics, 2021
In this paper, we study the inviscid and zero Froude number limits of the viscous shallow water system. We prove that the limit system is represented by the incompressible Euler equations on the whole space.
Yang Jianwei, Liu Mengyu, Hao Huiyun
doaj   +1 more source

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