高大空间建筑火灾数值仿真模型的应用研究

Research on Simulation Models Applied in Fire Analysis of Large Space Buildings

采用经验公式、区域模型和场模型这三种国际上最常用的数值仿真方法来分别研究大空间建筑火灾的特性。通过数值试验,了解不同仿真模型的模拟效果和异同,从而选择出适合大空间建筑火灾模拟分析的模型和方法以及适用条件。此外对FDS模拟大空间建筑火灾的相关参数进行了研究,分析了不同参数设置对模拟结果的影响,可为今后科学研究和工程实践提供参考。

Three numerical simulation models, experiential formula, field model and zone model, were chosen to simulate the fire scenario of a large space building model. The simulation results were compared and analyzed. Through the numerical experiments, different simulation effects and attributes of three models were understood and the most model was identified. The parameters of FDS were also studied and the influences on simulation results were analyzed, which could provide references for science investigations and engineer application in the future. Otherwise, the parameters of FDS applied to large space were also studied carefully. The effect on simulation results was illustrated as well. It is available for the relative research works and engineering.