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We investigate a stochastic version of the Allen-Cahn-Navier-Stokes system in a smooth two- or three-dimensional domain with random initial data. The system consists of a Navier-Stokes equation coupled with a convective Allen-Cahn equation,…

Analysis of PDEs · Mathematics 2022-05-31 Andrea Di Primio , Maurizio Grasselli , Luca Scarpa

We study a singular limit for the compressible Navier-Stokes system when the Mach and Rossby numbers are proportional to certain powers of a small parameter $\ep$. If the Rossby number dominates the Mach number, the limit problem is…

Analysis of PDEs · Mathematics 2015-05-27 Eduard Feireisl , Isabelle Gallagher , David Gérard-Varet , Antonin Novotny

Without any smallness assumption, we prove the global unique solvability of the 2-D incompressible inhomogeneous Navier-Stokes equations with initial data in the critical Besov space, which is almost the energy space in the sense that they…

Analysis of PDEs · Mathematics 2019-08-07 Hammadi Abidi , Guilong Gui

In this work, we study the gradient discretisation method (GDM) of the time-dependent Navier-Stokes equations coupled with the heat equation, where the viscosity depends on the temperature. We design the discrete method and prove its…

Numerical Analysis · Mathematics 2024-11-25 Yahya Alnashri

In this paper we study the deterministic homogenization problems for unsteady Navier-Stokes type equations, on one hand in an open set {\Omega} of R^{N}, on the other hand in porous media {\Omega}^{{\epsilon}}. In the second case, the…

Analysis of PDEs · Mathematics 2014-10-02 Lazarus Signing

The Navier-Stokes equations describe fluid flow in many everyday life situations. Newton's second law of motion describes changes in the object's speed when a force applied. The Navier-Stokes equations are equivalent to Newton's Law when…

Fluid Dynamics · Physics 2018-09-26 Edisher Kaghashvili

The paper is concerned with the existence and uniqueness of a strong solution to a two-dimensional backward stochastic Navier-Stokes equation with nonlinear forcing, driven by a Brownian motion. We use the spectral approximation and the…

Probability · Mathematics 2011-05-02 Jinniao Qiu , Shanjian Tang , Yuncheng You

We consider parabolic variational inequalities in a Hilbert space $V$, which have a non-monotone nonlinearity of Navier--Stokes type represented by a bilinear operator $B: V \times V \to V'$ and a monotone type nonlinearity described by a…

Analysis of PDEs · Mathematics 2026-01-15 Takahito Kashiwabara

In this paper, we examine the averaging effect of a highly oscillating external force on the solutions of the Navier-Stokes equations. We show that, as long as the force time-average decays over time, if the frequency and amplitude of the…

Analysis of PDEs · Mathematics 2026-03-03 Anirban Dutta

We study existence and uniqueness of invariant probability measures for continuous-time Markov processes on general state spaces. Existence is obtained from tightness of time averages under a weak regularity assumption inspired by…

Probability · Mathematics 2026-01-21 Jean-Gabriel Attali

We introduce a collection of benchmark problems in 2D and 3D (geometry description and boundary conditions), including simple cases with known analytic solution, classical experimental setups, and complex geometries with fabricated…

Computational Engineering, Finance, and Science · Computer Science 2021-12-13 Zizhou Huang , Teseo Schneider , Minchen Li , Chenfanfu Jiang , Denis Zorin , Daniele Panozzo

We present in this paper a pressure correction scheme for barotropic compressible Navier-Stokes equations, which enjoys an unconditional stability property, in the sense that the energy and maximum-principle-based a priori estimates of the…

Numerical Analysis · Mathematics 2010-11-01 Thierry Gallouët , Laura Gastaldo , Jean-Claude Latché , Raphaele Herbin

We prove here the validity of a large deviation principle for the family of invariant measures associated to a two dimensional Navier-Stokes equation on a torus, perturbed by a smooth additive noise.

Probability · Mathematics 2015-09-02 Zdzislaw Brzezniak , Sandra Cerrai

The Navier-Stokes equation on Rd (d greater or equal to 3) formulated on Besov spaces is considered. Using a stochastic forward-backward differential system, the local existence of a unique solution in B_ r, with r > 1 + d is obtained. We…

Analysis of PDEs · Mathematics 2013-05-29 Xin Chen , Ana Bela Cruzeiro , Zhongmin Qian

We introduce a modified version of the two-dimensional Navier-Stokes equation, preserving energy and momentum of inertia, which is motivated by the occurrence of different dissipation time scales and related to the gradient flow structure…

Mathematical Physics · Physics 2009-11-13 E. Caglioti , M. Pulvirenti , F. Rousset

We study the global-in-time dynamics for a stochastic semilinear wave equation with cubic defocusing nonlinearity and additive noise, posed on the $2$-dimensional torus. The noise is taken to be slightly more regular than space-time white…

Analysis of PDEs · Mathematics 2021-02-19 Justin Forlano , Leonardo Tolomeo

We show for the first time that the stochastic variational method can naturally derive the Navier-Stokes equation starting from the action of ideal fluid. In the frame work of the stochastic variational method, the dynamical variables are…

Statistical Mechanics · Physics 2012-06-18 T. Koide , T. Kodama

In this paper, uniqueness and uniform structural stability of Poiseuille flows in an infinitely long pipe with Navier boundary conditions are established for axisymmetric solutions of steady Navier-Stokes system. The crucial point is that…

Analysis of PDEs · Mathematics 2021-11-18 Yun Wang , Chunjing Xie

We are concerned with the Cauchy problem of the two-dimensional (2D) nonhomogeneous incompressible Navier-Stokes equations with vacuum as far-field density. It is proved that if the initial density decays not too slow at infinity, the 2D…

Analysis of PDEs · Mathematics 2018-04-30 Boqiang Lv , Xiaoding Shi , Xin Zhong

There is considerable evidence that solutions to the non-forced 3D Navier-Stokes equations in the natural energy space are not unique. Assuming this is the case, it becomes important to quantify how non-uniqueness evolves. In this paper we…

Analysis of PDEs · Mathematics 2022-06-09 Zachary Bradshaw , Patrick Phelps