Using thermal analysis experiment and Fire Dynamics Simulator (FDS) to reconstruct an arson fire scene
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PU foam samples which had caused fire to spread in an actual arson case were collected for thermal analysis experiments. The experiments were conducted at three different heating rates to obtain thermal reaction parameters including ~3,518.23–5,127.81 J g−1 of heat release at temperatures between 395 and 433 °C. The thermal analysis data were treated as the input data for the Fire Dynamics Simulator program. Results of smoke layers falling in the simulation space were compared and verified with the heights of smoke traces at the actual fire scene to obtain heating rates which are close to the actual conditions for the reconstruction of the entire fire scene. In addition to serving as a reference for the investigation and reconstruction of other fire cases, these research findings can also increase the awareness of the harmful aspects of PU foam for fire prevention in the future.
KeywordsPU foam Heating rate Thermal analysis experiment Fire Dynamics Simulator (FDS) Arson fire Fire scene
List of symbols
Characteristic fire diameter (m)
Total heat release rate (kW)
Specific heat (W s g−1 m−1)
Fire area available (m2)
Initial air density (kg m−3)
Initial temperature (K)
Gravitational acceleration (m s−2)
Size of a mesh cell (m)
During the study, Trans World University, Department of Environmental Resources Management, Prof. Sheng-Hung Wu provided valuable research data. His big help is truly appreciated.
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