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When a gas of particles interacts with much a larger reservoir the density dynamics on large scales is typically governed by diffusion. We study this paradigmatic problem for weakly coupled integrable systems and show that this picture gets…

统计力学 · 物理学 2026-01-13 Paweł Lisiak , Maciej Łebek , Miłosz Panfil

Thermodynamically consistent fractional Burgers constitutive models for viscoelastic media, divided into two classes according to model behavior in stress relaxation and creep tests near the initial time instant, are coupled with the…

经典物理 · 物理学 2019-12-03 Ljubica Oparnica , Dušan Zorica , Aleksandar Okuka

In this paper, a numerical solution of the two dimensional nonlinear coupled viscous Burgers equation is discussed with the appropriate initial and boundary conditions using the modified cubic B spline differential quadrature method. In…

数值分析 · 数学 2014-11-25 H. S. Shukla , Mohammad Tamsir , Vineet K. Srivastava , Jai Kumar

We construct a class of infinite mass functions for which solutions of the viscous Burgers equation decay at a better rate than solution of the heat equation for initial data in this class. In other words, we show an enhanced dissipation…

偏微分方程分析 · 数学 2024-03-05 Tej-Eddine Ghoul , Nader Masmoudi , Eliot Pacherie

This work proposes a deep learning-based emulator for the efficient computation of the coupled viscous Burgers' equation with random initial conditions. In a departure from traditional data-driven deep learning approaches, the proposed…

计算物理 · 物理学 2022-02-24 Xihaier Luo , Yihui Ren , Wei Xu , Shinjae Yoo , Balasubramanya Nadiga , Ahsan Kareem

We prove that the stochastic Burgers equation, which is related to the Kardar-Parisi-Zhang/KPZ equation via weak derivative, is a "critical" scaling limit for density fluctuations for a family of non-integrable and non-stationary…

概率论 · 数学 2022-03-01 Kevin Yang

This paper compares theory and experiment for the kinetics of time-dependent sedimentation. We discuss non-interacting suspensions and colloids which may exhibit behavior similar to the one-dimensional motion of compressible gas. The…

凝聚态物理 · 物理学 2016-08-31 Sergei E. Esipov

We explore a computational approach to coarse graining the evolution of the large-scale features of a randomly forced Burgers equation in one spatial dimension. The long term evolution of the solution energy spectrum appears self-similar in…

计算物理 · 物理学 2009-11-13 S. Ahuja , V. Yakhot , I. G. Kevrekidis

In this paper we study the analytic solutions of Burgers-type nonlinear fractional equations by means of the Invariant Subspace Method. We first study a class of nonlinear equations directly related to the time-fractional Burgers equation.…

可精确求解与可积系统 · 物理学 2013-06-11 P. Artale Harris , R. Garra

This article investigates the properties of the solutions of the dispersionless two-component Burgers (B2) equation, derived as a model for blood-flow in arteries with elastic walls. The phenomenon of wave breaking is investigated as well…

可精确求解与可积系统 · 物理学 2013-05-02 Tony Lyons

This papers shows the convergence of optimal control problems where the constraint function is discretised by a particle method. In particular, we investigate the viscous Burgers equation in the whole space $\mathbb R$ by using…

最优化与控制 · 数学 2013-10-01 Jan Marburger , Rene Pinnau

This work is concerned with the study of explicit solutions for generalized coupled reaction-diffusion and Burgers-type systems with variable coefficients. Including nonlinear models with variable coefficients such as diffusive…

数学物理 · 物理学 2024-06-26 José M. Escorcia , Erwin Suazo

We consider weakly asymmetric exclusion processes whose initial density profile is a small perturbation of a constant. We show that in the diffusive time-scale, in all dimensions, the density defect evolves as the solution of a viscous…

概率论 · 数学 2020-06-05 M. Jara , C. Landim , K. Tsunoda

Burgers equation is one of the simplest nonlinear partial differential equations-it combines the basic processes of diffusion and nonlinear steepening. In some applications it is appropriate for the diffusion coefficient to be a…

数学物理 · 物理学 2007-05-23 Zhenquan Li , A. J. Roberts

We analyze the score field of a diffusion generative model through a Burgers-type evolution law. For VE diffusion, the heat-evolved data density implies that the score obeys viscous Burgers in one dimension and the corresponding…

统计力学 · 物理学 2026-04-10 Krisanu Sarkar

In this article we deal with one-dimensional inverse problems concerning the Burgers equation and some related nonlinear systems (involving heat effects and/or variable density). In these problems, the goal is to find the size of the…

偏微分方程分析 · 数学 2022-01-05 J. Apraiz , A. Doubova , E. Fernández-Cara , M. Yamamoto

In this paper, we analyze the three-level explicit time-split MacCormack procedure in the numerical solutions of two-dimensional viscous coupled Burgers' equations subject to initial and boundary conditions. The differential operators split…

数值分析 · 数学 2024-09-23 Eric Ngondiep

The one dimensional Burgers equation in the inviscid limit with white noise initial condition is revisited. The one- and two-point distributions of the Burgers field as well as the related distributions of shocks are obtained in closed…

统计力学 · 物理学 2017-05-17 L. Frachebourg , Ph. A. Martin

In this work, we explore various relevant aspects of the Smoothed Particle Hydrodynamics regarding Burger's equation. The stability, precision, and efficiency of the algorithm are investigated in terms of different implementations. In…

计算物理 · 物理学 2020-01-08 Chong Ye , Philipe Mota , Jin Li , Kai Lin , Wei-Liang Qian

We consider a class of dispersive and dissipative perturbations of the inviscid Burgers equation, which includes the fractional KdV equation of order $\alpha$, and the fractal Burgers equation of order $\beta$, where $\alpha, \beta \in…

偏微分方程分析 · 数学 2021-07-16 Sung-Jin Oh , Federico Pasqualotto
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