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We consider a non-linear system modelling the dynamics of a linearly elastic body immersed in an incompressible viscous fluid, without damping on the elastic part. We prove local existence of strong solutions and global existence and…

偏微分方程分析 · 数学 2025-08-20 Karoline Disser , Michelle Luckas

In this paper, we introduce a nonlocal model for linear steady Stokes system with physical no-slip boundary condition. We use the idea of volume constraint to enforce the no-slip boundary condition and prove that the nonlocal model is…

偏微分方程分析 · 数学 2022-03-30 Qiang Du , Zuoqiang Shi

This paper concerns the dynamics of two layers of compressible, barotropic, viscous fluid lying atop one another. The lower fluid is bounded below by a rigid bottom, and the upper fluid is bounded above by a trivial fluid of constant…

偏微分方程分析 · 数学 2015-01-30 Juhi Jang , Ian Tice , Yanjin Wang

In this work we prove local existence of strong solutions to the initial-value problem arising in one-dimensional strain-limiting viscoelasticity, which is based on a nonlinear constitutive relation between the linearized strain, the rate…

偏微分方程分析 · 数学 2020-09-09 Husnu A. Erbay , Albert Erkip , Yasemin Sengul

We investigate the initial value problem of a very general class of $3+1$ non-Newtonian compressible fluids in which the viscous stress tensor with shear and bulk viscosity relaxes to its Navier-Stokes values. These fluids correspond to the…

偏微分方程分析 · 数学 2023-12-04 Ariel Lerman , Marcelo M. Disconzi , Jorge Noronha

This paper is dedicated to the study of viscous compressible barotropic fluids in dimension $N\geq2$. We address the question of well-posedness for {\it large} data having critical Besov regularity. Our result improve the analysis of R.…

偏微分方程分析 · 数学 2009-04-09 Boris Haspot

We consider higher order viscous Burgers' equations with generalized nonlinearity and study the associated initial value problems for given data in the $L^2$-based Sobolev spaces. We introduce appropriate time weighted spaces to derive…

偏微分方程分析 · 数学 2015-06-02 Xavier Carvajal , Mahendra Panthee

In this paper, we prove the local well-posedness of the free boundary problem in incompressible elastodynamics under a mixed type stability condition, i.e., for each point of the free boundary, at least one of the Taylor sign condition…

偏微分方程分析 · 数学 2019-11-15 Hui Li , Wei Wang , Zhifei Zhang

Local well-posedness is established for a highly nonlocal nonlinear diffusion-adhesion system for bounded initial values with small support. Macroscopic systems of this kind were previously obtained by the authors through upscaling in [32]…

偏微分方程分析 · 数学 2025-05-16 Mabel Lizzy Rajendran , Anna Zhigun

We consider the motion of an inextensible hanging string of finite length under the action of the gravity. The motion is governed by nonlinear and nonlocal hyperbolic equations, which is degenerate at the free end of the string. We show…

偏微分方程分析 · 数学 2025-02-25 Tatsuo Iguchi , Masahiro Takayama

This paper shows that the Stokes problem is well-posed when velocity and pressure simultaneously vanish on the domain boundary. This result is achieved by extending Ne\v{c}as' inequality to square-integrable functions that vanish in a small…

数值分析 · 数学 2025-04-24 Igor Tominec , Josefin Ahlkrona , Malte Braack

We consider the incompressible and stationary Stokes equations on an infinite two-dimensional wedge with non-scaling invariant Navier-slip boundary conditions. We prove well-posedness and higher regularity of the Stokes problem in a certain…

偏微分方程分析 · 数学 2024-07-23 Marco Bravin , Manuel V. Gnann , Hans Knüpfer , Nader Masmoudi , Floris B. Roodenburg , Jonas Sauer

In this paper, we consider an incompressible viscous flow without surface tension in a finite-depth domain of three dimensions, with free top boundary and fixed bottom boundary. This system is governed by a Naiver-Stokes equation in above…

偏微分方程分析 · 数学 2012-12-11 Lei Wu

We consider 3D free-boundary compressible elastodynamic system under the Rayleigh-Taylor sign condition. It describes the motion of an isentropic inviscid elastic medium with moving boundary. The deformation tensor satisfies the neo-Hookean…

偏微分方程分析 · 数学 2022-07-01 Junyan Zhang

We identify the wave maps type nonlinearities of incompressible Hookean elastodynamics equations in Lagerangian coordinates, and iterate them in the adapted $U^2$-type spaces to prove the small data global well-posedness in the critical…

偏微分方程分析 · 数学 2024-09-23 Zexian Zhang , Yi Zhou

We study a 1D semilinear wave equation modeling the dynamic of an elastic string interacting with a rigid substrate through an adhesive layer. The constitutive law of the adhesive material is assumed elastic up to a finite critical state,…

偏微分方程分析 · 数学 2016-03-25 Giuseppe Maria Coclite , Giuseppe Florio , Marilena Ligabo' , Francesco Maddalena

In this work it is shown how the immersed boundary method of (Peskin2002) for modeling flexible structures immersed in a fluid can be extended to include thermal fluctuations. A stochastic numerical method is proposed which deals with…

软凝聚态物质 · 物理学 2023-02-28 P. J. Atzberger , P. R. Kramer , C. S. Peskin

We study a one-dimensional nonlinear hyperbolic-parabolic initial boundary value problem occurring in the theory of thermoelasticity. We prove existence and uniqueness of the local-in-time strong solution. Also, some global-in-time weak…

偏微分方程分析 · 数学 2020-05-29 Tomasz Cieslak , Marija Galić , Boris Muha

We prove the well-posedness results, i.e. existence, uniqueness, and stability, of the solutions to a class of nonlocal fully nonlinear parabolic partial differential equations (PDEs), where there is an external time parameter $t$ on top of…

偏微分方程分析 · 数学 2021-10-11 Qian Lei , Chi Seng Pun

Motivated by an analysis on the well-posedness of the initial boundary value problem for the motion of an inextensible hanging string, we first consider an initial boundary value problem for one-dimensional degenerate hyperbolic systems…

偏微分方程分析 · 数学 2025-11-11 Tatsuo Iguchi , Masahiro Takayama