A nonlinear parabolic problem from combustion theory: attractors and stability

JOURNAL OF DIFFERENTIAL EQUATIONS

卷:218

Article

Pierotti, D ; Verri, M

关键词: nonlinear parabolic equations;    global attractor;    stability;    solid combustion;   

DOI  :  10.1016/j.jde.2004.09.003

来源: Elsevier

【 摘 要 】

A parabolic (convection-diffusion) problem in a half-line, arising when modeling the temperature profile of an adiabatic solid in radiation-driven combustion, is considered. Both the coefficient in the convective term (the velocity of the burning front) and the Neumann datum (the prescribed heat influx into the burning body) are nonlinearly related to the proper value of the solution at the boundary. In addition, the velocity is allowed to vanish below some threshold value. Under the main assumptions of intensely irradiated boundary and initial data that behave suitably as x -> -infinity, it is proven that there exists a global attractor for the evolution semigroup associated with the problem. Furthermore, the stabilization of all solutions towards the equilibrium solution (a uniformly propagating front) is derived for a class of Neumann data, which are of some interest for applications. (c) 2004 Elsevier Inc. All rights reserved.

【 授权许可】

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