Characterization of a diffusion flame inside a scale tunnel using double stream-twin jets air curtains

Abstract

In this experimental and numerical study using the Fire Dynamics Simulator (FDS) code the characterization of a diffusion flame inside a scale tunnel equipped with double stream-twin jets (DS-TJ) air curtains system is briefly described. Results of radiation and flame height were compared with theory. The FDS code has proved to be a suitable tool to predict the radiation with both gray gas assumption and 6-bands models. Gray gas model using 500 solid angles is the best option for a cheap and quick prediction. The experimental results for flame height are in good agreement with the usual zf/Df∝Q2/5 law.