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ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL STUDY OF A 1M DIAMETER METHANOL POOL FIRE: AN ASSESSMENT OF TURBULENCE AND EVAPORATION MODELS
Submission Author:
William de Oliveira , RS , Brazil
Co-Authors:
William de Oliveira, Raphael Machado Cezar, Felipe Roman Centeno, Guilherme Henrique Fiorot
Presenter: Raphael Machado Cezar
doi://10.26678/ABCM.ENCIT2022.CIT22-0423
Abstract
The numerical modeling of fire is a study of great interest to understand the characteristics of the flame and its heat released into the environment. In the present study, six numerical models of methanol combustion in a 1 m diameter pool fire are evaluated, based on experimental studies from the literature, to identify the best numerical setup for modeling the physical process employing the temperature distribution and the heat flux. The simulations differ by the turbulence model – Deardorff, Dynamic Smagorinsky, and Constant Smagorinsky – and the Heat Release Rate (HRR) of the methanol’s combustion form – prescribed and modeled. The temperature and heat flux sensors have the same configuration and position as the reference experiment. The computer simulation is performed in FDS (Fire Dynamics Simulator). The results showed that depending on the measurement position analyzed and the HRR modeling, the turbulence model can either correctly predict the pool fire behavior or reproduce incongruities to the problem's physics.
Keywords
FDS, heat release rate, Methanol, pool fire, turbulence modeling
