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为实现避难硐室内良好生存环境,提高人员生存环境质量,并为今后避难硐室的设计提供指导性依据,基于数值模拟软件FLUENT仿真平台,以压风供氧方式下的避难硐室生存区为研究对象,对主要扰动源进行分析,建立两种压风供氧管路方案下的避难硐室三维模型.通过控制方程组、RNG k--ε湍流模型、有限容积离散方法和SIMPLE算法相结合的方式,实现避难硐室空气分布可视化.得出在压风供氧下,以九个布气孔弥散式均匀布气的管道布置及尺寸设计最优方案,以及硐室内氧气和二氧化碳体积分数的主要分布规律.通过现场载人试验验证了数值模拟的可靠性.
In order to realize a good living environment in evacuation chamber and improve the living environment quality of personnel, and provide guidance for the design of evacuation chamber in the future, based on numerical simulation software FLUENT simulation platform, The object of the study is to analyze the main disturbing sources and establish the three - dimensional model of evacuation chamber under two schemes of air supply and oxygen supply pipeline.Through the control equations, the RNG k - ε turbulence model, the finite volume discretization method and the SIMPLE algorithm , The visualization of the air distribution in the evacuation chamber was realized.The optimal arrangement of pipe layout and size design with diffused uniform distribution of gas through the nine holes and the main volume fraction of oxygen and carbon dioxide in the chamber Distribution law.The reliability of numerical simulation was verified by field manned test.