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火灾环境下人员疏散耦合SPH模型及仿真 被引量:9

Coupling SPH Model for Occupant Evacuation in Fires and Simulation
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摘要 火灾环境下人员安全疏散计算机模型研究对建筑防火设计、减少人员伤亡等具有重要的指导意义。建立了一种考虑火灾环境因素的室内人员疏散耦合模型。建立了一种模拟人员运动的连续型模型,并利用光滑粒子流动力学方法(SPH)将模型离散化为粒子系统。给出了一种将火灾动力学模拟结果耦合到疏散模型中的方法,其中由火灾烟气蔓延参数来决定人员运动状态和失能情况。提出的模型能够比较准确的反映人员疏散的实际情况。 Computer simulation of evacuation can be very helpful in building design for fire protection and reducing casualty in compartment fire. A coupling model for occupant evacuation building fires was proposed. A continuous model was composed by treating pedestrians movement as fluid movement, and by using Smoothed Particle Hydrodynamics method to discretize this continuous model, the model was transformed into a particle system. A method for coupling FDS into the occupant evacuation model was proposed, and the amounts of smoke density and smoke charge of pedestrian were used to determine the move direction of a pedestrian and to estimate whether a pedestrian incapacitated or not. The proposed model can simulate the phenomenon of evacuation more real and reasonable.
出处 《系统仿真学报》 CAS CSCD 北大核心 2016年第2期292-300,共9页 Journal of System Simulation
基金 河北省科技计划项目(15275408D)
关键词 人员疏散模型 社会力模型 光滑粒子流动力学(SPH) 火灾动力学模拟(FDS) evacuation model social force model smoothed particle hydrodynamics(SPH) fire dynamics simulator(FDS)
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