Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
A report on the implementation of new spectral models for radiative heat transfer calculations in the software Fire Dynamics Simulator
Submission Author:
Guilherme Crivelli Fraga , SP
Co-Authors:
Guilherme Crivelli Fraga, Cássio Fernandes, Felipe Roman Centeno, Adriane Prisco Petry, Francis França
Presenter: Felipe Roman Centeno
doi://10.26678/ABCM.ENCIT2018.CIT18-0124
Abstract
Fire Dynamics Simulator (FDS) is a software developed for the numerical simulation of fire-driven flows, widely used in problems involving smoke and in fire reconstructions. Because it is an open-source code, FDS is well-suitable for modifications to its subroutines in order to add new physical or numerical models or to improve existing ones. In this framework, this paper study the implementation of a series of spectral models for the solution of the radiative heat transfer problem in participating media in that software. The models include two formulations for computing local absorption coefficient for a gray gas model, a weighted-sum-of-gray-gases model suitable for non-gray media, and the line-by-line integration methodology. A verification of each model is performed through comparisons with a one-dimensional reference solution obtained by an in-house code for a set test cases consisting of non-homogeneous, non-isothermal mixtures of carbon dioxide and water vapor with different optical thicknesses. Results show a very good agreement between the models implemented to FDS and the reference code, attesting that the implementation was successful.
Keywords
Spectral models, Verification, Fire Dynamics Simulator, WSGG model
