本文選題：煙氣溢流　切入點：窗口寬度　出處：《消防科學與技術》2016年12期 　論文類型：期刊論文

【摘要】：為探究窗口寬度對高層建筑火災窗口煙溢流行為變化的影響規(guī)律,以南京市某寫字樓為模型,應用FDS對此高層建筑室內火災時窗口煙氣溢流的行為進行研究。火源位于房間中央,功率為1 500kW。改變窗口寬度,設置6個工況,分析窗口處氣體的質量流率、溫度、速度的變化。結果表明,不同窗口寬度下煙氣溢流的行為符合一定的變化規(guī)律。隨著窗口寬度的減小,窗口處中性面的高度抬升,流出煙氣的質量流率減小,溫度降低,并且發(fā)生煙溢流的時間推遲。通過理論分析計算驗證了模擬結果。
[Abstract]:In order to investigate the influence of window width on smoke overflow behavior of fire windows in high-rise buildings, an office building in Nanjing was used as a model. The behavior of window flue gas overflow during indoor fire in this high-rise building is studied by using FDS. The fire source is located in the center of the room and the power is 1 500 kW. The window width is changed and six working conditions are set to analyze the mass flow rate and temperature of the gas in the window. The results show that the behavior of flue gas overflow at different window widths conforms to a certain variation law. With the decrease of window width, the height of neutral plane at the window rises, the mass flow rate of the outflow smoke decreases, and the temperature decreases. And the time of smoke overflow is delayed. The simulation results are verified by theoretical analysis and calculation.
【作者單位】： 南京工業(yè)大學安全科學與工程學院;南京工業(yè)大學江蘇省城市與工業(yè)安全重點實驗室;南京市消防支隊;
【基金】：國家自然科學基金青年科學基金資助項目“風環(huán)境下高層建筑外開口煙氣溢流行為與擴散特性研究”(51408306)
【分類號】：TU998.1
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本文編號：1623453