火源虚拟燃料包的开发和应用

摘要

对影响FDS模拟结果的火源参数作对比分析,认为影响较大的是材料固相属性的相关参数,如材料密度、汽化热、燃烧热、点燃温度等;开发了虚拟燃料包,与实验得到的热释放速率和烟气变化规律吻合较好,利用开发的虚拟燃料包进行实尺寸场景模拟,并用Karlsson和Quintiere提出的方程加以验证.结果表明,虚拟燃料包能够很好地反映室内火灾的燃烧特征.%The fire source parameters influencing the FDS simulation were compared and analyzed, and it was believed that the parameters of solid-phase matenal properties, such as the density, heat of vaporization, heat of combustion and ignition temperature, et al.have the biggest influence.The virtual fuel package was developed.which can fit well with the heat release rate and smoke change rules.The virtual fuel package was used to simulate the actual size fire scene, and equations created by Karlsson and Quintiere were utilized to validate the simulation.The results showed that virtual fuel package can reflect the burning characteristics of indoor fire well.