An extended floor field model considering the spread of fire and detour behavior

• Published in: Physica A Vol. 577; p. 126069
• Main Authors: Lee, Minhyuck, Lee, Jaeyoung, Jun, Chulmin
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2021
• Subjects: Detour behavior; Evacuation simulation; Fire spread; Floor field model (FFM); Pedestrian; Evacuation simulation; Pedestrian; Fire spread; Floor field model (FFM); Detour behavior
• ISSN: 0378-4371; 1873-2119
• DOI: 10.1016/j.physa.2021.126069

This paper proposes an extended floor field model considering the spread of fire and detour behavior. It includes a fire spread field and a fire recognition field. An agent who recognizes a fire makes a detour to an exit with the lowest risk considering transition probability based on the weighted static floor field. The improved transition probability takes into account the agent’s visibility reduced by smoke diffusion. The proposed model differs from the related models in that the agent dynamically chooses the safety path upon fire detection. Compared to simulations using commercial software, the model predicted longer evacuation times and fewer agents inhaling smoke. The model’s implementation included realistic pedestrian movements, such as trying to move away from a smoke-filled space. •In the proposed model, a field that describes the spread of fire and a field that represents an area in which fire can be visually recognized were added.•The detour movement to the safe exits of the agent was implemented by applying the transition probability equation based on the weighted SFF (Static Floor Field), which are calculated in response to smoke diffusion.•The proposed model differs from the existing models in that the agent dynamically chooses a safe path when it detects a fire.