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有限长度倾斜通道内火灾近上壁面区域温度特性

DOI: 10.3969/j.issn.1006-7043.201312002

Keywords: 倾斜通道, 火灾, 热流体, 温度衰减, 实验研究, 无量纲温度

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Abstract:

为了掌握有限长度矩形倾斜通道内发生火灾时,通道内近上壁面区域内的热烟气在自然对流作用下的运动特性,在搭建的倾斜矩形短通道火灾实验台上分别以甲醇、乙醇和丙醇作为燃料,在通道倾斜角度为0°、3°、6°和9°时进行了火灾实验,测量了通道内近上壁面区域的热烟气温度分布情况,确定了倾斜短通道内近上壁面区域无量纲温度随无量纲距离的变化规律,并在水平通道温度变化公式基础上,通过对实验结果拟合得到了通道上、下游温度衰减系数随倾角的变化公式.

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