核电站主储油罐间火灾喷淋控制效用数值模拟研究

摘要

FDS(Fire Dynamics Simulator)火灾动态模拟是一种以火灾中流体运动为主要模拟对象的计算流体动力学软件.本文通过应用FDS建立了一套接近于真实核电站主储油罐间火灾情景的模型,讨论了喷淋系统在不同火灾情景下对关键点温度、CO2浓度和O2浓度的控制效用.研究表明,喷淋系统能够有效降低环境温度,并且能够在一定程度上控制CO2浓度和O2浓度.本文结论表明了FDS在核电站火灾应用方面的可行性和优势.%FDS (Fire Dynamics Simulator) is one kind of computational fluid dynamics software which takes the fluid motion in fire as the main simulation object. In this paper, a model closed to real fire scenario of fuel tank room in nuclear power plant was established by FDS. And then,with the spray system,the control effects of the key point temperature,oxygen concentration and carbon dioxide concentration were discussed. It was indicated that the spray system could reduce the environmental temperature effectively, and to a certain extent, the oxygen concentration and carbon dioxide concentration could be controlled. Therefore, the advantages and feasibility of FDS in nuclear power plant application were presented.