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We show that the two-component system of hyperbolic conservation laws $\partial_t \rho + \partial_x (\rho u) =0 = \partial_t u + \partial_x \rho$ appears naturally in the formally computed hydrodynamic limit of some randomly growing…

概率论 · 数学 2017-07-18 Balint Toth , Wendelin Werner

We consider hydrodynamic scaling limits for a class of reversible interacting particle systems, which includes the symmetric simple exclusion process and certain zero-range processes. We study a (non-quadratic) microscopic action functional…

数学物理 · 物理学 2018-12-19 Marcus Kaiser , Robert L. Jack , Johannes Zimmer

We have derived energy conservation equations from the quaternionic Newton's law that is compatible with Lorentz transformation. This Newton's law yields directly the Euler equation and other equations governing the fluid motion. With this…

综合物理 · 物理学 2011-08-11 Arbab I. Arbab

We investigate the relation between several generalized solution concepts for nonlinear PDE systems from fluid dynamics. More precisely, we study measure-valued solutions, dissipative weak solutions, and energy-variational solutions. For…

偏微分方程分析 · 数学 2026-04-02 Thomas Eiter , Robert Lasarzik , Emil Wiedemann

In this paper we compare three frameworks for modeling flows of complex fluids: (i) local conservations of mass, momentum and energy, (ii) GENERIC, and (iii) Onsager principle. The first is based on the mass, momentum, and energy…

软凝聚态物质 · 物理学 2026-03-05 Miroslav Grmela

This research presents a model that accurately represents the motions of gaseous stars We employ the Navier-Stokes-Poisson system to transform compressible Euler equations into non-compressible ones by combining quasineutral and inviscid…

偏微分方程分析 · 数学 2024-09-27 Anis Rahmani , Abdelaziz Mennouni

We develop deterministic particle schemes to solve non-local scalar conservation laws with congestion. We show that the discrete approximations converge to the unique entropy solution with an explicit rate of convergence under more general…

偏微分方程分析 · 数学 2021-08-12 Emanuela Radici , Federico Stra

We consider nxn hyperbolic systems of balance laws in one-space dimension under the assumption that all negative (resp. positive) characteristics are linearly degenerate. We prove the local exact one-sided boundary null controllability of…

偏微分方程分析 · 数学 2017-12-14 Tatsien Li , Lei Yu

This note addresses the question of energy conservation for the 2D Euler system with an $L^p$-control on vorticity. We provide a direct argument, based on a mollification in physical space, to show that the energy of a weak solution is…

偏微分方程分析 · 数学 2015-09-11 A. Cheskidov , M. C. Lopes Filho , H. J. Nussenzveig Lopes , R. Shvydkoy

We prove that bounded weak solutions of the compressible Euler equations will conserve thermodynamic entropy unless the solution fields have sufficiently low space-time Besov regularity. A quantity measuring kinetic energy cascade will also…

偏微分方程分析 · 数学 2018-04-16 Theodore D. Drivas , Gregory L. Eyink

We measure hydrodynamic interactions between colloidal particles confined in a thin sheet of fluid. The reduced dimensionality, compared to a bulk fluid, increases dramatically the range of couplings. Using optical tweezers we force a two…

软凝聚态物质 · 物理学 2009-11-13 R. Di Leonardo , S. Keen , F. Ianni , J. Leach , M. Padgett , G. Ruocco

The second law of thermodynamics states that the entropy of an isolated system can only increase over time. This appears to conflict with the reversible evolution of isolated quantum systems under the Schr\"odinger equation, which preserves…

量子物理 · 物理学 2025-01-16 Florian Meier , Tom Rivlin , Tiago Debarba , Jake Xuereb , Marcus Huber , Maximilian P. E. Lock

In this work, we propose a class of high order semi-Lagrangian scheme for a general consistent BGK model for inert gas mixtures. The proposed scheme not only fulfills indifferentiability principle, but also asymptotic preserving property,…

数值分析 · 数学 2020-12-07 Seung Yeon Cho , Sebastiano Boscarino , Maria Groppi , Giovanni Russo

In this paper we study the hydrodynamic limit of a B.G.K. like kinetic model on domains with boundaries via $BV_{loc}$ theory. We obtain as a consequence existence results for scalar multidimensional conservation laws with kinetic boundary…

数学物理 · 物理学 2009-11-10 M. Tidriri

The two-dimensional shallow water equations in Eulerian and Lagrangain coordinates are considered. Lagrangian and Hamiltonian formalism of the equations is given. The transformations mapping the two-dimensional shallow water equations with…

流体动力学 · 物理学 2023-04-18 V. A. Dorodnitsyn , E. I. Kaptsov , S. V. Meleshko

Flows of one-dimensional continuum in Lagrangian coordinates are studied in the paper. Equations describing these flows are reduced to a single Euler-Lagrange equation which contains two undefined functions. Particular choices of the…

数学物理 · 物理学 2018-12-12 E. I. Kaptsov , S. V. Meleshko

We discuss a simple model of particles hopping in one dimension with attractive interactions. Taking a hydrodynamic limit in which the interaction strength increases with the system size, we observe the formation of multiple clusters of…

统计力学 · 物理学 2017-05-05 Matthew Burman , Daniel Carpenter , Robert L. Jack

This Ph.D. thesis reports on progress in rigorously establishing hydrodynamic principles from the microscopic Hamiltonian dynamics of quantum many-body systems in a general, non-model-specific manner. Using the C*-algebra framework of…

数学物理 · 物理学 2026-01-14 Dimitrios Ampelogiannis

We investigate the causality and stability of three different relativistic dissipative fluid-dynamical formulations emerging from a system of classical, ultra-relativistic scalar particles self-interacting via a quartic potential. For this…

核理论 · 物理学 2023-11-14 Caio V. P. de Brito , Gabriel S. Rocha , Gabriel S. Denicol

The hydrodynamic attractor is a concept that describes universal equilibration behavior in which systems lose microscopic details before hydrodynamics becomes applicable. We propose a setup to observe hydrodynamic attractors in ultracold…

量子气体 · 物理学 2025-06-18 Keisuke Fujii , Tilman Enss