船舶超大空间火灾环境下人员疏散模型OACSTPCD

Quantification of the impact of a fire in a super large space on a ship on the evacuation ability of pedes-trians can be challenging.To address this issue,based on the theory of cellular automata,this paper constructs an evacuation model CAVT for pedestrians to independently analyze the impact of temperature and visibility in the fire environment.The CAVT model uses the sigmoid function and historical experimental data to establish the mapping relationship among the temperature,visibility,and athletic ability of pedestrians.Based on the FDS numerical sim-ulation data,the time-space coupling relationship of the impact of the fire environment field on the athletic ability of pedestrians is established.Moreover,the entropy method is used to calculate the weight coefficients of the tempera-ture and visibility fields of the fire environment field.Considering a super large space on a passenger ship as an ex-ample,the results show that the evacuation time under a fire environment is greatly affected by the power of the fire source,while the location of the fire source is less affected,and the exit width is greater than 3 m,which does not affect the evacuation efficiency.Compared with the Pathfinder software,the CAVT model can simulate the dynamic decline feedback of pedestrians'athletic ability due to high temperature and low visibility with superior accuracy.