Radiative Heating of a Glass Plate

Paquet, Luc¹ ; El Cheikh, Raouf² ; Lochegnies, Dominique² ; Siedow, Norbert³

¹ Univ. Lille Nord de France UVHC-ISTV, LAMAV-EDP FR no 2956, 59313 Valenciennes, France (Author to whom all correspondence should be addressed)
² Univ. Lille Nord de France UVHC-ISTV, TEMPO, 59313 Valenciennes, France
³ Fraunhofer Institute for Industrial Mathematics, ITWM, 67663 Kaiserlautern, Germany

MathematicS In Action, Tome 5 (2012) no. 1, pp. 1-30

Résumé

This paper aims to prove existence and uniqueness of a solution to the coupling of a nonlinear heat equation with nonlinear boundary conditions with the exact radiative transfer equation, assuming the absorption coefficient $\kappa \left(\lambda \right)$ to be piecewise constant and null for small values of the wavelength $\lambda$ as in the paper of N. Siedow, T. Grosan, D. Lochegnies, E. Romero, “Application of a New Method for Radiative Heat Tranfer to Flat Glass Tempering”, J. Am. Ceram. Soc., 88(8):2181-2187 (2005). An important observation is that for a fixed value of the wavelength $\lambda$, Planck function is a Lipschitz function with respect to the temperature. Using this fact, we deduce that the solution is at most unique. To prove existence of a solution, we define a fixed point problem related to our initial boundary value problem to which we apply Schauder theorem in a closed convex subset of the Banach separable space $L^2(0,t_f;C\left([0,l]\right))$. We use also Stampacchia truncation method to derive lower and upper bounds on the solution.

Détail

Publié le : 2012-12-21
DOI : 10.5802/msia.6

Classification : 35K20, 35K55, 35K58, 35K90, 35Q20, 35Q60, 35Q80
Keywords: elementary pencil of rays, Planck function, radiative transfer equation, glass plate, nonlinear heat-conduction equation, Stampacchia truncation method, Schauder theorem, Vitali theorem.