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相关论文: Kolmogorov Equations for Randomly Perturbed Genera…

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In this article we consider a damped version of the incompressible Navier-Stokes equations in the whole three-dimensional space with a divergence-free and time-independent external force. Within the framework of a well-prepared force and…

偏微分方程分析 · 数学 2023-04-07 Diego Chamorro , Oscar Jarrín

We develop a mathematical theory for a class of compressible viscoelastic rate-type fluids with stress diffusion. Our approach is based on the concepts used in the nowadays standard theory of compressible Newtonian fluids as…

偏微分方程分析 · 数学 2020-01-08 Miroslav Bulíček , Eduard Feireisl , Josef Málek

In contrast to normal fluids, a granular fluid under shear supports a steady state with uniform temperature and density since the collisional cooling can compensate locally for viscous heating. It is shown that the hydrodynamic description…

统计力学 · 物理学 2007-05-23 A. Santos , V. Garzo , J. W. Dufty

Turbulence is ubiquitous in nature yet even for the case of ordinary Newtonian fluids like water our understanding of this phenomenon is limited. Many liquids of practical importance however are more complicated (e.g. blood, polymer melts…

The motion of incompressible fractional Oldroyd-B fluids between two parallel walls perpendicular to a plate that applies time-dependent shear stresses to the fluid is studied by means of integral transforms. In the special cases of…

流体动力学 · 物理学 2014-08-21 Azhar Ali Zafar , Constantin Fetecau , Itrat Abbas Mirza

We establish a general theory of optimal strong error estimation for numerical approximations of a second-order parabolic stochastic partial differential equation with monotone drift driven by a multiplicative infinite-dimensional Wiener…

数值分析 · 数学 2022-03-02 Zhihui Liu , Zhonghua Qiao

Hydrodynamics of the non-relativistic compressible fluid in the curved spacetime is derived using the generalized framework of the stochastic variational method (SVM) for continuum medium. The fluid-stress tensor of the resultant equation…

广义相对论与量子宇宙学 · 物理学 2020-05-06 T. Koide , T. Kodama

Based on the variational field theory framework, we extend our previous mean-field formalism, taking into account the electrostatic correlations of the ions. We employ a general covariant approach and derive a total stress tensor that…

软凝聚态物质 · 物理学 2024-05-09 Yury A. Budkov , Petr E. Brandyshev

In this paper, we derive quasi-optimal a priori error estimates for the kinematic pressure for a Local Discontinuous Galerkin (LDG) approximation of steady systems of $p$-Navier-Stokes type in the case of shear-thickening, i.e., in the case…

数值分析 · 数学 2024-02-06 Alex Kaltenbach , Michael Růžička

We prove strong well-posedness results for the stochastic 2D Euler equations in vorticity form and generalized SQG equations, with $L^p$ initial data and driven by a spatially rough, incompressible transport noise of Kraichnan type.…

概率论 · 数学 2026-01-12 Marco Bagnara , Lucio Galeati

We consider a stochastic partial differential equation (SPDE) model for chemorepulsion, with non-linear sensitivity on the one-dimensional torus. We show that for any suitable initial data there exists a pathwise unique, global solution to…

概率论 · 数学 2023-08-22 Ilya Chevyrev , Ben Hambly , Avi Mayorcas

We prove that a probability solution of the stationary Kolmogorov equation generated by a first order perturbation $v$ of the Ornstein--Uhlenbeck operator $L$ possesses a highly integrable density with respect to the Gaussian measure…

概率论 · 数学 2021-04-13 Vladimir I. Bogachev , Egor D. Kosov , Alexander V. Shaposhnikov

We consider a non-Newtonian fluid flow in a thin domain with thickness $\eta_\varepsilon$ and an oscillating top boundary of period $\varepsilon$. The flow is described by the 3D incompressible Navier-Stokes system with a nonlinear…

偏微分方程分析 · 数学 2017-12-19 María Anguiano , Francisco J. Suárez-Grau

This article is a continuation of our first work \cite{chaudruraynal:frikha}. We here establish some new quantitative estimates for propagation of chaos of non-linear stochastic differential equations in the sense of McKean-Vlasov. We…

偏微分方程分析 · 数学 2021-08-26 Noufel Frikha , Paul-Eric Chaudru de Raynal

We consider a Volterra convolution equation in $\mathbb{R}^d$ perturbed with an additive fractional Brownian motion of Riemann-Liouville type with Hurst parameter $H\in (0,1)$. We show that its solution solves a stochastic partial…

概率论 · 数学 2023-09-26 Alessandro Bondi , Franco Flandoli

Using numerical methods, we examine the dynamics of nonlinear perturbations in the expanding time direction, under a Gowdy symmetry assumption, of FLRW fluid solutions to the Einstein-Euler equations with a positive cosmological constant…

广义相对论与量子宇宙学 · 物理学 2023-05-23 Florian Beyer , Elliot Marshall , Todd A. Oliynyk

This study investigates a stochastic version of a class of non-Newtonian fluids governed by third-grade fluid equations, which exhibit complex and highly nonlinear dynamics. In particular, we address the random dynamics and asymptotic…

概率论 · 数学 2026-01-22 Kush Kinra

In this paper we study the existence of weak solutions to an unsteady system describing the motion of micro-polar electrorheological fluids. The constitutive relations for the stress tensors belong to the class of generalized Newtonian…

偏微分方程分析 · 数学 2015-10-02 E. Baeumle , M. Ruzicka

We establish moment estimates for the invariant measure of a stochastic partial differential equation describing motion by mean curvature flow in (1+1) dimension, leading to polynomial stability of the associated Markov semigroup. We also…

概率论 · 数学 2019-01-28 Abelhadi Es-Sarhir , Max von Renesse , Wilhelm Stannat

We numerically study, under a Gowdy symmetry assumption, nonlinear perturbations of the decelerated FLRW fluid solutions to the Einstein-Euler system toward the future for linear equations of state $p=K\rho$ with $0\leq K\leq 1$. This…

广义相对论与量子宇宙学 · 物理学 2025-05-12 Elliot Marshall