大空间中庭内热分层环境下环境温度对烟气上升高度的影响

Effect of environment temperature on the smoke height in thermally stratified environments of large atriums

根据稳定线性热分层环境下羽流积分控制方程,分析了温度因素对羽流中性浮力点高度和羽流最大上升高度的影响,在大空间实验室开展了一系列实验,采集环境温度,计算竖向温度梯度,利用摄像机拍摄并记录烟气层上升高度,通过实验数据对理论分析结果进行了验证。

In this work, a series of tests were conducted in a large test hall, and the data of environment temperature and vertical temperature gradients of smoke were collected for calculations. Based on the smoke plume integral equations in the linearly thermally stratified environment, the effect of temperature on the heights of neutral buoyancy point and maximum rising point of smoke plume was theoretically analyzed, which was verified by the test results.