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A reduced dynamical model is derived which describes the interaction of weak inertia-gravity waves with nonlinear vortical motion in the context of rotating shallow-water flow. The formal scaling assumptions are (i) that there is a…

chao-dyn · 物理学 2009-10-28 Caroline Nore , Theodore G. Shepherd

Two-dimensional free-surface potential flows of an ideal fluid over a strongly inhomogeneous bottom are investigated with the help of conformal mappings. Weakly-nonlinear and exact nonlinear equations of motion are derived by the…

流体动力学 · 物理学 2016-09-08 V. P. Ruban

In this note, we study the hydrodynamic limit, in the hyperbolic space-time scaling, for a one-dimensional unpinned chain of quantum harmonic oscillators with random masses. To the best of our knowledge, this is among the first examples,…

数学物理 · 物理学 2021-08-06 Amirali Hannani

We provide a `user guide' to the literature of the past twenty years concerning the modeling and approximation of discontinuous solutions to nonlinear hyperbolic systems that admit small-scale dependent shock waves. We cover several classes…

偏微分方程分析 · 数学 2013-12-05 Philippe G. LeFloch , Siddhartha Mishra

We consider an obstacle problem for (possibly non-local) wave equations, and we prove existence of weak solutions through a convex minimization approach based on a time discrete approximation scheme. We provide the corresponding numerical…

偏微分方程分析 · 数学 2019-01-24 Mauro Bonafini , Matteo Novaga , Giandomenico Orlandi

In many occurrences of fluid-structure interaction time-periodic motions are observed. We consider the interaction between a fluid driven by the three dimensional Navier-Stokes equation and a two dimensional linearized elastic Koiter shell…

偏微分方程分析 · 数学 2024-01-31 Claudiu Mîndrilă , Sebastian Schwarzacher

Floating offshore structures often exhibit low-frequency oscillatory motions in the horizontal plane, with amplitudes in the same order as their characteristic dimensions and larger than the corresponding wave-frequency responses, making…

流体动力学 · 物理学 2021-10-07 Yanlin Shao , Zhiping Zheng , Hui Liang , Jikang Chen

Hydrodynamic equations for a one-component plasma are derived as a generalization of the Euler equations to include the effects of the long-range Coulomb interaction. By using a variational principle, these equations self-consistently unify…

等离子体物理 · 物理学 2024-03-20 Daniels Krimans , Seth Putterman

In classical continuum physics, a wave is a mechanical disturbance. Whether the disturbance is stationary or traveling and whether it is caused by the motion of atoms and molecules or the vibration of a lattice structure, a wave can be…

流体动力学 · 物理学 2014-04-14 Ivan C. Christov

Shockwaves provide a useful and rewarding route to the nonequilibrium properties of simple fluids far from equilibrium. For simplicity, we study a strong shockwave in a dense two-dimensional fluid. Here, our study of nonlinear transport…

流体动力学 · 物理学 2020-03-24 Wm. G. Hoover , Carol G. Hoover

Large deviations of conservative interacting particle systems, such as the zero range process, about their hydrodynamic limit and their respective rate functions lead to the analysis of the skeleton equation; a degenerate…

概率论 · 数学 2022-03-16 Benjamin Fehrman , Benjamin Gess

A widely used approach to mathematically describe the atmosphere is to consider it as a geophysical fluid in a shallow domain -- and thus to model it using classical fluid dynamical equations combined with the explicit inclusion of an…

偏微分方程分析 · 数学 2021-12-14 Donatella Donatelli , Nóra Juhász

The asymptotic behavior of weak time-periodic solutions to the Navier-Stokes equations with a drift term in the three-dimensional whole space is investigated. The velocity field is decomposed into a time-independent and a remaining part,…

偏微分方程分析 · 数学 2020-05-28 Thomas Eiter

Relativistic hydrodynamics of classic plasmas is derived from the microscopic model in the limit of ideal plasmas. The chain of equations is constructed step by step starting from the concentration evolution. It happens that the energy…

等离子体物理 · 物理学 2023-08-09 Pavel A. Andreev

A system of five ordinary differential equations is studied which combines the Lorenz-84 model for the atmosphere and a box model for the ocean. The behaviour of this system is studied as a function of the coupling parameters. For most…

chao-dyn · 物理学 2015-06-24 L. van Veen , F. Verhulst , T. Opsteegh

We consider hydrodynamic limits of interacting particles systems with open boundaries, where the exterior parameters change in a time scale slower than the typical relaxation time scale. The limit deterministic profiles evolve…

概率论 · 数学 2016-01-20 Anna De Masi , Stefano Olla

This thesis is concerned with dynamics of conservative nonlinear waves on bounded domains. In general, there are two scenarios of evolution. Either the solution behaves in an oscillatory, quasiperiodic manner or the nonlinear effects cause…

广义相对论与量子宇宙学 · 物理学 2016-03-04 Maciej Maliborski

Time-periodic weak solutions for a coupled hyperbolic-parabolic system are obtained. A linear heat and wave equation are considered on two respective $d$-dimensional spatial domains that share a common $(d-1)$-dimensional interface…

偏微分方程分析 · 数学 2026-01-30 Stanislav Mosny , Boris Muha , Sebastian Schwarzacher , Justin T. Webster

We develop a rigorous asymptotic derivation for two mathematical models of water waves that capture the full nonlinearity of the Euler equations up to quadratic and cubic interactions, respectively. Specifically, letting epsilon denote an…

偏微分方程分析 · 数学 2018-07-03 C. H. Arthur Cheng , Rafael Granero-Belinchon , Steve Shkoller , Jon Wilkening

This article is devoted to the proof of the well-posedness of a model describing waves propagating in shallow water in horizontal dimension $d=2$ and in the presence of a fixed partially immersed object. We first show that this…

偏微分方程分析 · 数学 2023-06-28 David Lannes , Tatsuo Iguchi