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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
INFLUENCE OF THE FIRE SOURCE POSITION ON THE HOT GAS LAYER TEMPERATURE IN A MULTI-COMPARTMENT SCENARIO
Submission Author:
Rodolfo Prediger Helfenstein , RS
Co-Authors:
Rodolfo Prediger Helfenstein, Calisa Lemmertz, Felipe Roman Centeno
Presenter: Rodolfo Prediger Helfenstein
doi://10.26678/ABCM.ENCIT2020.CIT20-0062
Abstract
The use of computational fluid dynamics (CFD) models is becoming the main method to predict and reconstruct fire behavior. The Hot Gas Layer Temperature (HGLT) is one of the most important parameters in compartment fires, once it is the temperature of the room that determines the impact and development of the fire. Thus, the present work aims to analyze numerically, using the software Fire Dynamics Simulator (FDS), the influence of the fire source location on the Hot Gas Layer Temperature in a multi-compartment fire. The numerical model was validated by comparing the results obtained through FDS with the experimental data described by Johansson et al. (2015), showing a good agreement. The results showed that when placing the fire source next to a wall or a corner, the HGLT in the fire room increases while in the adjacent room it decreases, due to the reduction of the air entrainment and the thickness of the smoke layer. The highest HGLT in the fire room occurred when the pool fire was positioned in a corner (P.3), while in the adjacent room the highest HGLT was found when the pool fire was positioned in the center of the scenario 1 room.
Keywords
Multi-compartment fires, FDS, hot gas layer temperature, fire source position
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