一种基于SPH 方法的人员疏散混合模型及模拟

摘要

Computer simulation of evacuation can be very helpful for reducing casualty in compartmentre. By intro- ducing the principle of hydromechanics in this paper, a new hybrid evacuation model is composed, in which pedestrian movement is treated as fluid movement. In this new model, the characteristic features of escape panics are described by including mass behavior. By using the smoothed particle hydrodynamics (SPH) method to discretize this continu- ous model, the computational complexity can be decreased. Evacuation simulation experiments under di®erent working conditions show that the proposed model and algorithm have good e®ect on simulation of evacuation phenomenon.%为减少室内火灾环境下人员伤亡，研究了人员疏散计算机模拟问题。将人员运动视为一种流体运动，利用流体力学原理，构建一种新的人员疏散混合模型，并在其中引入了一种从众模式。同时，采用光滑粒子流体动力学方法对模型离散化，从而减少了计算量。不同工况下进行的疏散模拟实验表明，所提出的模型及算法能够较准确地模拟出实际疏散的现象。