Modeling carbon black trace in building fire and its validation |
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| Affiliation: | 1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China;2. Fire Investigation Department, Shanghai Fire Bureau, Shanghai 200051, PR China;1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Chengdu Aircraft Industry (Group) Co. Ltd. of AVIC, Chengdu 610092, China;1. School of Mechanical Engineering, Shanghai Jiao Tong University, No.800 Dongchuan Road, Shanghai 200240, China;2. School of Material Engineering, Shanghai University of Engineering Science, No.333 Long Teng Road, Shanghai 201620, China;1. Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China;2. Department of Pathology, Hubei University of Chinese Medicine, Wuhan, Hubei Province, P. R. China;3. Department of Basic Medicine, Wuxi Medical School, Jiangnan University, Wuxi, Jiangsu Province, P. R. China;1. School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, China;2. National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, 214122, China;3. The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China;4. Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, 12180, NY, USA;5. Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, 12180, NY, USA;6. Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, 12180, NY, USA |
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| Abstract: | The carbon black trace is an important characteristic in a building fire accident and becomes crucial evidence in fire investigation. Based on the particle deposition theory, the mathematical model is established for the carbon black trace in a building fire. The numerical model of the carbon black trace is implemented into the Fire Dynamics Simulator (FDS) software. The total mass of the carbon black particle deposited on the wall surface can be calculated quantitatively and be simulated visually. The proposed model is applied into a fire accident as a validation. A numerical model is used to simulate the fire accident. In numerical simulations, the grid size resolution is analyzed. The accident reconnaissance data, accident interview record and accident scene photo/video are compared with the results of numerical simulations. It shows that the simulation results have a good agreement with those in the fire accident, which validates the mathematical model in this study. The proposed method can provide useful data for fire reconstruction and fire investigation. |
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| Keywords: | Carbon black trace Building fire Particle deposition theory Numerical simulation FDS |
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