Comparison of different combustion models in enclosure fire simulation |
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| Affiliation: | 1. School of Civil Engineering, Hefei University of Technology, Hefei, Anhui 230009, China;2. Anhui International Joint Research Center on Hydrogen Safety, Hefei, 230009, China;3. Shanghai Fire Research Institute of MEM, 601 South Zhongshan 2nd Road, Shanghai, 200032, China;1. Laboratoire de Me canique des Fluides et d’Acoustique, University of Lyon, CNRS UMR 5509 Ecole Centrale de Lyon, INSA Lyon, Universite Claude Bernard, 36, avenue Guy de Collongue, 69134, Ecully, France;2. Centre d’Etudes des Tunnels, 25, avenue Fraņcois Mitterrand, 69500, Bron, France;1. The Korea Ship and Offshore Research Institute (The Lloyd''s Register Foundation Research Centre of Excellence), Pusan National University, Busan, South Korea;2. Department of Naval Architecture and Ocean Engineering, Pusan National University, Busan, South Korea;3. Department of Mechanical Engineering, University College London, London, UK;4. Korea Research Institute of Ships and Ocean Engineering, Daejeon, South Korea;5. Department of Naval Architecture and Marine Systems Engineering, Pukyong National University, Busan, South Korea;1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230027, China;2. Warwick FIRE, School of Engineering, University of Warwick, Coventry CV4 7AL, UK;3. The Centre for Fire and Explosion Studies, Kingston University, London SW15 3DW, UK;1. Jensen Hughes, RDT&E, Blacksburg, VA, USA;2. Socially Determined, Blacksburg, VA, USA |
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| Abstract: | In this study, three combustion models, the volumetric heat source (VHS) model, the eddy break-up model and the presumed probability density function (prePDF) model, are examined in enclosure fire simulation. The combustion models are compared and evaluated for their performance in predicting three typical enclosure fires, a room fire, a shopping mall fire and a tunnel fire. High Reynolds number turbulence k–ε model with buoyancy modification and the discrete transfer radiation model (DTRM) are used in the simulation. Corresponding experimental data from the literature are adopted for validation. The results show satisfactory prediction in flow patterns and features in the complex enclosure fires. However, it is shown that these combustion models are not able to show consistent performance over the different locations and enclosure fires. The needs for adequate turbulent combustion models in enclosure fires are discussed. |
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