Simulation study of emergency aircraft cabin evacuation considering the dynamic influence of fire products
To examine the dynamic impact of fire products on the evacuation process of passengers in a single-aisle aircraft cabin during a fire incident,this study initially establishes the physical parameters of the cabin layout,including the number of seats,seat spacing,door dimensions,and overall cabin configuration of the aircraft under investigation.Following this,a physical model of the cabin is constructed using Pyrosim.Numerical simulations of cabin fuel leakage fire scenarios are then performed,involving the configuration of key parameters such as the fire source's heat release rate,product yield rate,model boundary conditions,and grid size.Simulation results yield detailed variations of temperature and CO volume fraction at various locations within the cabin during a fire incident over time,forming a dynamic three-dimensional matrix of fire product data.Subsequently,a personnel evacuation simulation model for cabin fire scenarios is crafted using the AnyLogic platform.The effectiveness of this simulation model is then validated through real-person experiments.This simulation model facilitates the dynamic retrieval of fire product data stored in the previously mentioned three-dimensional matrix through implemented functions and code.Finally,three fire evacuation strategies are devised based on this fire evacuation model:nearest exit evacuation,zoning evacuation,and fire avoidance evacuation.Through 500 random seed experiments using the simulation model,the evacuation times of different evacuation strategies are analyzed,revealing that the zoning evacuation strategy produces the shortest evacuation time.These experimental findings highlight the substantial impact of the number of people passing through the exits on the overall evacuation duration.The zoning evacuation strategy emerges as the most effective,with the optimal relative ranks of the best zoning positions identified as 10 rows from the forward cabin door and 11 rows from the aft cabin door.Conversely,evacuation time is longest when employing the fire avoidance strategy,especially when the fire originates in the middle of the wing exit or the rear of the cabin.The study's findings offer a theoretical foundation and data support for personnel evacuation during cabin fires.Additionally,the established model serves as a valuable simulation tool for evaluating various cabin fire evacuation scenarios.
万方数据
维普
