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Dynamical systems studies of differential equations often focus on the behavior of solutions near critical points and on invariant manifolds, to elucidate the organization of the associated flow. In addition, effective methods, such as the…

动力系统 · 数学 2015-05-13 Judy Day , Jonathan Rubin , Carson C. Chow

We investigate a system of nonlinear partial differential equations modeling the unsteady flow of a shear-thinning non-Newtonian fluid with a concentration-dependent power-law index. The system consists of the generalized Navier-Stokes…

偏微分方程分析 · 数学 2025-05-09 Kyueon Choi , Kyungkeun Kang , Seungchan Ko

We provide evidence of an extremely slow thermalization occurring in the Discrete NonLinear Schr\"odinger (DNLS) model. At variance with many similar processes encountered in statistical mechanics - typically ascribed to the presence of…

统计力学 · 物理学 2019-03-04 Stefano Iubini , Liviu Chirondojan , Gian-Luca Oppo , Antonio Politi , Paolo Politi

This paper investigates the asymptotic behavior of a hyperbolic relaxation system designed for homogeneous two-phase flows in the limit of vanishing relaxation time. The governing equations comprise conservation laws for mixture mass and…

偏微分方程分析 · 数学 2026-03-19 Huimin Yu

We formulate a relaxed linear elastic micromorphic continuum model with symmetric Cauchy force-stresses and curvature contribution depending only on the micro-dislocation tensor. Our relaxed model is still able to fully describe rotation of…

数学物理 · 物理学 2015-06-16 Patrizio Neff , Ionel-Dumitrel Ghiba , Angela Madeo , Luca Placidi , Giuseppe Rosi

We study the long-time behaviour of solutions to quasilinear doubly degenerate parabolic problems of fourth order. The equations model for instance the dynamic behaviour of a non-Newtonian thin-film flow on a flat impermeable bottom and…

偏微分方程分析 · 数学 2022-04-19 Jonas Jansen , Christina Lienstromberg , Katerina Nik

We consider a nonlocal nonlinear model with fractional diffusion motivated by studies of electroconvection phenomena in incompressible viscous fluids. We address the global well-posedness, global regularity and long time dynamics of the…

偏微分方程分析 · 数学 2023-10-02 E. Abdo , M. Ignatova

We perform the discrete-to-continuum limit passage for a microscopic model describing the time evolution of dislocations in a one dimensional setting. This answers the related open question raised by Geers et al. in [GPPS13]. The proof of…

偏微分方程分析 · 数学 2014-11-05 Patrick van Meurs , Adrian Muntean

This paper investigates the global well-posedness and large-time behavior of solutions for a coupled fluid model in $\mathbb{R}^3$ consisting of the isothermal compressible Euler-Poisson system and incompressible Navier-Stokes equations…

偏微分方程分析 · 数学 2024-05-29 Young-Pil Choi , Houzhi Tang , Weiyuan Zou

Dislocation climb plays an important role in understanding plastic deformation of metallic materials at high temperature. In this paper, we present a continuum formulation for dislocation climb velocity based on densities of dislocations.…

材料科学 · 物理学 2023-08-15 Chutian Huang , Shuyang Dai , Xiaohua Niu , Tianpeng Jiang , Zhijian Yang , Yejun Gu , Yang Xiang

We study asymptotic dynamics of a coupled system consisting of linearized 3D Navier--Stokes equations in a bounded domain and the classical (nonlinear) elastic plate equation for in-plane motions on a flexible flat part of the boundary. The…

偏微分方程分析 · 数学 2020-07-15 Igor Chueshov

Starting from a non-local version of the Prigogine-Herman traffic model, we derive a natural hierarchy of kinetic discrete velocity models for traffic flow consisting of systems of quasi-linear hyperbolic equations with relaxation terms.…

数值分析 · 数学 2023-06-01 Raul Borsche , Axel Klar

We study a viscous two-layer quasi-geostrophic beta-plane model that is forced by imposition of a spatially uniform vertical shear in the eastward (zonal) component of the layer flows, or equivalently a spatially uniform north-south…

偏微分方程分析 · 数学 2015-06-04 Aseel Farhat , R. Lee Panetta , Edriss S. Titi , Mohammed Ziane

We describe a method to model nonlinear dynamical systems using periodic solutions of delay-differential equations. We show that any finite-time trajectory of a nonlinear dynamical system can be loaded approximately into the initial…

适应与自组织系统 · 物理学 2007-05-23 Alexander N. Jourjine

These lectures present the analysis of stability and control of long time behavior of PDE models described by nonlinear evolutions of hyperbolic type. Specific examples of the models under consideration include: (i) nonlinear systems of…

偏微分方程分析 · 数学 2012-04-27 Igor Chueshov , Irena Lasiecka

A two-dimensional nonlinear Schrodinger lattice with nonlinear coupling, modelling a square array of weakly coupled linear optical waveguides embedded in a nonlinear Kerr material, is studied. We find that despite a vanishing energy…

斑图形成与孤子 · 物理学 2008-12-18 Michael Oster , Magnus Johansson

The dynamics of two-phase flows out of mechanical and thermal equilibrium are described by a partially dissipative first-order quasilinear system with stiff interaction terms associated with fast relaxation scales. In this paper, we analyze…

偏微分方程分析 · 数学 2026-05-25 Cosmin Burtea , Timothée Crin-Barat , Pierre Gonin--Joubert

We present some relaxation and integral representation results for energy functionals in the setting of structured deformations, with special emphasis given to the case of multi-level structured deformations. In particular, we present an…

偏微分方程分析 · 数学 2025-04-23 A. C. Barroso , J. Matias , E. Zappale

We study a system of parabolic equations consisting of a double nonlinear parabolic equations of Forchheimer type coupled with a semilinear parabolic equations. The system describes a fluid-like driven system for active-passive pedestrian…

偏微分方程分析 · 数学 2019-12-30 T. K. Thoa Thieu , Matteo Colangeli , Adrian Muntean

In this paper we analyze a model for electroporation, a biological process in which a cell membrane exposed to an external voltage becomes permeable due to the formation and growth of nanoscale membrane pores. We prove a local stability…

偏微分方程分析 · 数学 2026-04-15 Barbara Niethammer , Lorena Pohl , Juan J. L. Velázquez