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高层住宅主支式排烟道的主烟道中烟气流动可看作是一维定常垂直摩擦管流。通过计算管流流动相与颗粒相的物理参数沿管程分布情况 ,确定了颗粒相流动情况 ,进而判断烟气排放情况。这受到排烟系统高度、烟道管径 ,及材料组成等因素的影响 ,通过预设排烟系统高度并保证良好排放情况 ,求得主烟道管径应满足的条件。这使得布设排烟道时可以找到一个较好的横截面尺寸 ,既满足烟气排放条件 ,又节约修建材料
The flue gas flow in the main flue of the main exhaust duct of high-rise residential buildings can be regarded as a one-dimensional steady vertical friction pipe flow. By calculating the distribution of the physical parameters of the mobile phase and the particulate phase along the pipelines, the flow of the particulate phase is determined, and then the flue gas emissions are judged. This is affected by factors such as the height of the exhaust system, the diameter of the flue, and the composition of the material. By pre-setting the height of the exhaust system and ensuring good emission, the conditions for the flue pipe diameter to be met should be obtained. This makes it possible to find a better cross-sectional dimension when laying the flue duct, meeting both the flue gas discharge conditions and the construction material savings