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A class of parabolic cross-diffusion systems modeling the interaction of an arbitrary number of population species is analyzed in a bounded domain with no-flux boundary conditions. The equations are formally derived from a random-walk…

偏微分方程分析 · 数学 2015-02-20 Nicola Zamponi , Ansgar Jüngel

In this paper, we study small data solutions for the Vlasov-Poisson system with the simplest external potential, for which unstable trapping holds for the associated Hamiltonian flow. We prove sharp decay estimates in space and time for…

偏微分方程分析 · 数学 2023-04-25 Anibal Velozo Ruiz , Renato Velozo Ruiz

We are concerned with the long time behavior of the stochastic Navier--Stokes system for compressible fluids in dimension two and three. In this setting, the part of the phase space occupied by the solution depends sensitively on the choice…

偏微分方程分析 · 数学 2020-12-15 Dominic Breit , Eduard Feireisl , Martina Hofmanova

This paper studies the global existence and uniqueness of strong solutions and its large-time behavior for the compressible isothermal Euler equations with a nonlocal dissipation. The system is rigorously derived from the kinetic…

偏微分方程分析 · 数学 2018-01-16 Young-Pil Choi

We establish long-time and large-data existence of a suitable weak solution to three-dimensional internal unsteady flows described by Kolmogorov's two-equation model of turbulence. The governing system of equations is completed by initial…

偏微分方程分析 · 数学 2019-06-11 Miroslav Bulíček , Josef Málek

We investigate the incompressible Navier-Stokes equations with variable density. The aim is to prove existence and uniqueness results in the case of discontinuous ini- tial density. In dimension n = 2, 3, assuming only that the initial…

偏微分方程分析 · 数学 2015-06-04 Raphaël Danchin , Piotr B. Mucha

We consider the weak solution of the simplified Ericksen-Leslie system modeling compressible nematic liquid crystal flows in $\mathbb R^3$. When the initial data is small in $L^2$ and initial density is positive and essentially bounded, we…

偏微分方程分析 · 数学 2012-10-05 Guochun Wu , Zhong Tan

Hydrodynamic systems arising in swarming modelling include nonlocal forces in the form of attractive-repulsive potentials as well as pressure terms modelling strong local repulsion. We focus on the case where there is a balance between…

偏微分方程分析 · 数学 2018-03-12 José A. Carrillo , Aneta Wróblewska-Kamińska , Ewelina Zatorska

We prove the existence of a weak solution to the equations describing the inertial motions of a coupled system constituted by a rigid body containing a viscous compressible fluid. We then provide a weak-strong uniqueness result that allows…

偏微分方程分析 · 数学 2020-03-18 Giovanni Paolo Galdi , Václav Mácha , Šárka Nečasová

We approximate a two--phase model by the compressible Navier-Stokes equations with a singular pressure term. Up to a subsequence, these solutions are shown to converge to a global weak solution of the compressible system with the congestion…

偏微分方程分析 · 数学 2014-10-03 Charlotte Perrin , Ewelina Zatorska

Several data compressors have been proposed in distributed optimization frameworks of network systems to reduce communication overhead in large-scale applications. In this paper, we demonstrate that effective information compression may…

系统与控制 · 电气工程与系统科学 2025-07-22 Zihao Ren , Lei Wang , Xinlei Yi , Xi Wang , Deming Yuan , Tao Yang , Zhengguang Wu , Guodong Shi

We are concerned with the existence and uniqueness of solutions with only bounded density for the barotropic compressible Navier-Stokes equations. Assuming that the initial velocity has slightly sub-critical regularity and that the initial…

偏微分方程分析 · 数学 2020-01-08 Raphaël Danchin , Francesco Fanelli , Marius Paicu

Slow flows of an ideal compressible fluid (gas) in the gravity field in the presence of two isentropic layers are considered, with a small difference of specific entropy between them. Assuming irrotational flows in each layer [that is ${\bf…

大气与海洋物理 · 物理学 2010-12-30 V. P. Ruban

In this paper, we consider mathematical modeling and numerical simulation of non-isothermal compressible multi-component diffuse-interface two-phase flows with realistic equations of state. A general model with general reference velocity is…

数值分析 · 数学 2018-08-15 Jisheng Kou , Shuyu Sun

We prove global existence and uniqueness of solutions of Oldroyd-B systems with relatively small data in $\Rr^d$, in a large functional setting ($C^{\alpha}\cap L^1$). This is a stability result, solutions select an equilibrium and converge…

偏微分方程分析 · 数学 2010-09-02 Peter Constantin , Weiran Sun

In this paper, we consider the compressible fluid model of Korteweg type in a critical case where the derivative of pressure equals to $0$ at the given constant state. It is shown that the system admits a unique, global strong solution for…

偏微分方程分析 · 数学 2020-09-08 Takayuki Kobayashi , Miho Murata

We investigate a hydrodynamic system of Navier--Stokes/Cahn--Hilliard type, which describes the motion of a two-phase flow of two incompressible fluids with unmatched densities coupled with a soluble chemical species. Derived from Onsager's…

偏微分方程分析 · 数学 2025-12-30 Andrea Giorgini , Jingning He , Hao Wu

A class of parabolic-parabolic Keller-Segel systems with degenerate diffusion and volume filling is studied in a bounded domain subject to no-flux boundary conditions. The equations are derived from a multiphase fluid model. The interplay…

偏微分方程分析 · 数学 2026-05-21 Noah Geltner , Ansgar Jüngel , Mingyue Zhang

We study the behavior of perturbations in a compressible one-dimensional inviscid gas with an ambient state consisting of constant pressure and periodically-varying density. We show through asymptotic analysis that long-wavelength…

偏微分方程分析 · 数学 2025-08-27 David I. Ketcheson , Giovanni Russo

In this paper we consider the multi-dimensional pressureless Euler system and we tackle the problem of existence and uniqueness of sticky particle solutions for general measure-type initial data. Although explicit counterexamples to both…

偏微分方程分析 · 数学 2020-04-15 Bianchini Stefano , Daneri Sara