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In this work, we introduce a novel approach to formulating an artificial viscosity for shock capturing in nonlinear hyperbolic systems by utilizing the property that the solutions of hyperbolic conservation laws are not reversible in time…

数值分析 · 数学 2022-04-20 Tarik Dzanic , Will Trojak , Freddie D. Witherden

We propose a first-order theory of relativistic dissipative fluids in the trace-fixed particle frame, which is similar to Eckart's frame except that the temperature is determined by fixing the trace of the stress-energy tensor. Our theory…

广义相对论与量子宇宙学 · 物理学 2025-04-30 J. Félix Salazar , Ana Laura García-Perciante , Olivier Sarbach

We study general linear transport-reaction systems on an arbitrary dimensional hypercube with periodic boundary conditions. Transport-reaction systems are often used to model the finite speed movement and interaction of particles, bacteria…

偏微分方程分析 · 数学 2022-10-04 Benedikt Geiger

We study the motion of phase interfaces in a diffusive lattice equation with bistable nonlinearity and derive a free boundary problem with hysteresis to describe the macroscopic evolution in the parabolic scaling limit. The first part of…

偏微分方程分析 · 数学 2015-03-03 Michael Helmers , Michael Herrmann

The goal of this research is the study of the thermomagnetic consequences in isotropic type-II superconductors, subjected to multi-component magnetic fields $\mathbf{H}_a = H_{ay}\hat{y}+H_{az}\hat{z}$, because the instability field…

超导电性 · 物理学 2018-09-24 O. A. Hernández-Flores , J. Gutiérrez-Gutiérrez , C. Romero-Salazar

It is known that a finite-size homogeneous granular fluid develops an hydrodynamic-like instability when dissipation crosses a threshold value. This instability is analyzed in terms of modified hydrodynamic equations: first, a source term…

统计力学 · 物理学 2009-10-31 R. Soto , M. Mareschal , M. Malek Mansour

This paper investigates the exact controllability problem for multi-dimensional stochastic first-order symmetric hyperbolic systems with control inputs acting in two distinct ways: an internal control applied to the diffusion term and a…

最优化与控制 · 数学 2026-01-27 Zengyu Li , Qi Lü , Yu Wang , Haitian Yang

For a two-dimensional steady supersonic Euler flow past a convex cornered wall with right angle, a characteristic discontinuity (vortex sheet and/or entropy wave) is generated, which separates the supersonic flow from the gas at rest (hence…

偏微分方程分析 · 数学 2015-06-11 Gui-Qiang G. Chen , Vaibhav Kukreja , Hairong Yuan

We analyse the universal properties of nonequilibrium steady states of driven Magnetohydrodynamic (MHD) turbulence in three dimensions (3d). We elucidate the dependence of various phenomenologically important dimensionless constants on the…

统计力学 · 物理学 2009-11-10 Abhik Basu

We consider a differential model describing nonisothermal fast phase separation processes taking place in a three-dimensional bounded domain. This model consists of a viscous Cahn-Hilliard equation characterized by the presence of an…

偏微分方程分析 · 数学 2007-05-23 Maurizio Grasselli , Hana Petzeltova , Giulio Schimperna

A non-local dynamic homogenization technique for the analysis of a viscoelastic heterogeneous material which displays a periodic microstructure is herein proposed. The asymptotic expansion of the micro-displacement field in the transformed…

应用物理 · 物理学 2018-11-26 Rosaria Del Toro , Andrea Bacigalupo , Marco Paggi

Topological defects are crucial to the thermodynamics and structure of condensed matter systems. For instance, when incorporated into crystalline membranes like graphene, disclinations with positive and negative topological charge…

软凝聚态物质 · 物理学 2018-08-29 Isaac R. Bruss , Gregory M. Grason

The fluid dynamics community has found success in explaining both the onset and coherent structure formation in wall-bounded turbulence through examining transient growth and pseudoresonance. Whether similar effects are important in plasmas…

等离子体物理 · 物理学 2024-11-01 Elias Pratschke

This note is devoted to the linear stability of the Couette flow for the non-isentropic compressible Euler equations in a domain $\mathbb{T}\times \mathbb{R}$. Exploiting the several conservation laws originated from the special structure…

偏微分方程分析 · 数学 2021-05-18 Xiaoping Zhai

This study considers the linear stability of Poiseuille-Rayleigh-B\'enard flows, subjected to a transverse magnetic field to understand the instabilities that arise from the complex interaction between the effects of shear, thermal…

流体动力学 · 物理学 2017-09-01 Tony Vo , Gregory J. Sheard , Alban Pothérat

Recent advances in physics-augmented neural networks have enabled thermodynamically consistent data-driven constitutive modeling of complex inelastic materials. Most existing approaches, however, implicitly adopt a specific thermodynamic…

材料科学 · 物理学 2026-05-28 Reese E. Jones , Jan N. Fuhg

Irreversible processes accomplished in a fixed time involve nonlinearly coupled flows of matter, energy, and information. Here, using entropy production as an example, we show how thermodynamic uncertainty relations and speed limits on…

统计力学 · 物理学 2021-05-12 Schuyler B. Nicholson , Jason R. Green

In this paper we study the interaction problem between a nonlinear thermoelastic plate and a compressible viscous fluid with the adiabatic constant $\gamma>12/7$. The existence of a weak solution for this problem is obtained by constructing…

偏微分方程分析 · 数学 2020-10-06 Srđan Trifunović , Ya-Guang Wang

In this paper, we consider the nonisentropic ideal polytropic Navier-Stokes equations to the Cauchy problem. The asymptotic stability of contact discontinuity is established under the condition that the initial perturbations are partly…

偏微分方程分析 · 数学 2020-03-06 Tingting Zheng

This paper studies the problems of identifiability and estimation in high-dimensional nonparametric latent structure models. We introduce an identifiability theorem that generalizes existing conditions, establishing a unified framework…

统计理论 · 数学 2025-08-06 Yichen Lyu , Pengkun Yang