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高架仓库火灾烟气流动及易燃物质赋存方式转变的数值分析

Keywords: 高架仓库,赋存方式,数值模拟

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Abstract:

针对高架仓库中易燃物资的着火特性,建立几何模型并应用涡团耗散模型对机械排烟条件下火灾烟气的速度、温度及燃烧反应物质的分布特性进行模拟.结果表明冷热气体的流动使仓库中心形成低速回流区,燃料储存罐体周围烟气流速较低,冷空气入口和烟气排出口速度较高;系统温度受进口风速、烟气流动和化学反应的影响呈现高度不均匀性,低温区主要在水平地面附近,高温主要在中心和排风扇出口的区域;燃烧反应物主要分布在储存罐体的周围,系统中心处生成物浓度分布较高,不利于火情扑救.

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