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We obtain new estimates for the solution of both the porous medium and the fast diffusion equations by studying the evolution of suitable Lipschitz norms. Our results include instantaneous regularization for all positive times, long-time…

偏微分方程分析 · 数学 2023-09-26 Noemi David , Filippo Santambrogio

We study the long-time asymptotics of prototypical non-linear diffusion equations. Specifically, we consider the case of a non-degenerate diffusivity function that is a (non-negative) polynomial of the dependent variable of the problem. We…

偏微分方程分析 · 数学 2020-08-13 Ivan C. Christov , Akif Ibraguimov , Rahnuma Islam

We examine the short and long-time behaviors of time-fractional diffusion equations with variable space-dependent order. More precisely, we describe the time-evolution of the solution to these equations as the time parameter goes either to…

偏微分方程分析 · 数学 2019-01-11 Yavar Kian , Diomba Sambou , Eric Soccorsi

We analyze the stochastic scaling laws arising in the invicid limit of the decaying solutions of the Burgers equation. The linear scaling of the velocity structure functions is shown to reflect the domination by shocks of the long-time…

chao-dyn · 物理学 2023-04-10 Denis Bernard , Krzysztof Gawedzki

We are interested in the long-time asymptotic behavior of growth-fragmentation equations with a nonlinear growth term. We present examples for which we can prove either the convergence to a steady state or conversely the existence of…

偏微分方程分析 · 数学 2019-02-28 Pierre Gabriel

This article addresses some asymptotic and numerical issues related to the solution of Burgers' equation, $-\epsilon u_{xx} + u_t + u u_x = 0$ on $(-1,1)$, subject to the boundary conditions $u(-1) = 1 + \delta$, $u(1) = -1$, and its…

数值分析 · 数学 2025-10-20 Marc Garbey , Hans G. Kaper

We prove the existence of globally attracting solutions of the viscous Burgers equation with periodic boundary conditions on the line for some particular choices of viscosity and non-autonomous forcing. The attract- ing solution is periodic…

动力系统 · 数学 2015-08-19 Jacek Cyranka , Piotr Zgliczyński

We study a nonlinear porous medium type equation involving the infinity Laplacian operator. We first consider the problem posed on a bounded domain and prove existence of maximal nonnegative viscosity solutions. Uniqueness is obtained for…

偏微分方程分析 · 数学 2011-09-20 Manuel Portilheiro , Juan Luis Vazquez

In this letter, a coupled system of viscous Burgers' equations with zero Dirichlet boundary conditions and appropriate initial data is considered. For the well-known single viscous Burgers' equation with zero Dirichlet boundary conditions,…

chao-dyn · 物理学 2008-02-03 J. Duan , J. Nee

We consider the 1D viscous Burgers equation with a control localised in a finite interval. It is proved that, for any $\varepsilon>0$, one can find a time $T$ of order $\log\varepsilon^{-1}$ such that any initial state can be steered to the…

偏微分方程分析 · 数学 2016-06-27 Armen Shirikyan

The paper deals with a problem of asymptotic step-like solutions to the Burgers' equation with variable coefficients and a small parameter. By means of the non-linear WKB method, the algorithm of constructing these asymptotic solutions is…

数学物理 · 物理学 2023-03-03 Valerii Samoilenko , Yuliia Samoilenko , Elvira Zappale

We obtain precise large time asymptotics for the Cauchy problem for Burgers type equations satisfying shock profile condition. The proofs are based on the exact a priori estimates for (local) solutions of these equations and a recent result…

偏微分方程分析 · 数学 2007-05-23 G. Henkin , A. Shananin , A. Tumanov

We use the vorticity formulation to study the long-time behavior of solutions to the Navier-Stokes equation on R^3. We assume that the initial vorticity is small and decays algebraically at infinity. After introducing self-similar…

偏微分方程分析 · 数学 2016-09-07 Th. Gallay , C. E. Wayne

We consider an initial value problem for a quadratically nonlinear inviscid Burgers-Hilbert equation that models the motion of vorticity discontinuities. We use a modified energy method to prove the existence of small, smooth solutions over…

偏微分方程分析 · 数学 2013-01-10 John K. Hunter , Mihaela Ifrim , Daniel Tataru , Tak Kwong Wong

In this paper we are concerned with the well-posedness and the exponential stabilization of the generalized Korteweg-de Vries Burgers equation, posed on the whole real line, under the effect of a damping term. Both problems are investigated…

偏微分方程分析 · 数学 2015-09-29 Fernando Andrés Gallego , Ademir Fernando Pazoto

We use the one-dimensional Burgers equation to illustrate the effect of replacing the standard Laplacian dissipation term by a more general function of the Laplacian -- of which hyperviscosity is the best known example -- in equations of…

混沌动力学 · 物理学 2020-04-22 Walter Pauls , Samriddhi Sankar Ray

We investigate the asymptotic speed of spread of the solutions of a non-autonomous Fisher-KPP equation with nonlocal diffusion, driven by a thin-tailed kernel. In this paper, we are concerned with both compactly supported and exponentially…

偏微分方程分析 · 数学 2023-08-04 Arnaud Ducrot , Zhucheng Jin

In this paper we study the asymptotic behaviour of a nonlocal nonlinear parabolic equation governed by a parameter. After giving the existence of unique branch of solutions composed by stable solutions in stationary case, we gives for the…

偏微分方程分析 · 数学 2010-03-23 Armel Andami Ovono

In this work we consider the problem of constructing initial conditions for a flow model such that the resulting flow evolution leads to a self-similar energy cascade consistent with Kolmogorov's statistical theory of turbulence. As a first…

流体动力学 · 物理学 2026-03-24 Pritpal Matharu , Bartosz Protas , Tsuyoshi Yoneda

Burgers' equation is an important mathematical model used to study gas dynamics and traffic flow, among many other applications. Previous analysis of solutions to Burgers' equation shows an infinite stream of simple poles born at t = 0^+,…