火灾环境下人员疏散耦合SPH模型及仿真  

Coupling SPH Model for Occupant Evacuation in Fires and Simulation

作　　者：苗志宏[1] 李智慧[2] 

机构地区：[1]中国人民武装警察部队学院管理系,廊坊065000 [2]中国人民武装警察部队学院科研部,廊坊065000

出　　处：《系统仿真学报》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)

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.

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) 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]