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Boundary layers and domain decomposition for radiative heat transfer and diffusion equations: applications to glass manufacturing process

Published online by Cambridge University Press:  01 August 1998

A. KLAR
Affiliation:
Fachbereich Mathematik, Universität Kaiserslautern, Kaiserslautern, Germany
N. SIEDOW
Affiliation:
Institut für Techno- und Wirtschaftsmathematik, Kaiserslautern, Germany

Abstract

In this paper domain decomposition methods for radiative transfer problems including conductive heat transfer are treated. The paper focuses on semi-transparent materials, like glass, and the associated conditions at the interface between the materials. Using asymptotic analysis we derive conditions for the coupling of the radiative transfer equations and a diffusion approximation. Several test casts are treated and a problem appearing in glass manufacturing processes is computed. The results clearly show the advantages of a domain decomposition approach. Accuracy equivalent to the solution of the global radiative transfer solution is achieved, whereas computation time is strongly reduced.

Type
Research Article
Copyright
1998 Cambridge University Press

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