Modelling Thermal Radiation in Continuously Operated Reheating Furnaces.

Alexander Matthew, CK Tan, John Ward, Paul Roach

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Abstract

The “zone” method is widely used for modelling thermal radiative heat transfer in high-temperature furnaces. The Radiation Exchange Areas (REA) are fundamental to the application of the zone method. In complex geometries, however, the determination of REA represents the major computational overhead of the zone method. Consequently an efficient algorithm to determine these REA is crucial if mathematical models based on the zone method are to be useful for simulating the behaviour of furnaces in real-time. This paper describes the preliminary work involved in developing an improved Monte-Carlo based Ray-Tracing (MCRT) programme to determine the REA in a typical steel reheating furnace. The programme has been designed to allow complete radiation interchange between the steel load and the top and bottom parts of the furnace; this is an important treatment often neglected by more simplistic models. The results so far show a ±7% error when compared to existing solutions. Future work for the project is proposed.
Original languageEnglish
Title of host publicationProceedings of the 6th Research Student Workshop, University of Glamorgan, 17th March 2011
EditorsPaul Roach, Peter Plassman
Pages31-34
Volume6
Publication statusPublished - 17 Mar 2011

Keywords

  • Heat transfer
  • Mathematical modelling
  • Monte Carlo

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