| 曲线隧道射流风机通风效率优化研究 |
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| 引用本文： | 陈研,王天雄,陶浩文,徐志胜.曲线隧道射流风机通风效率优化研究[J].消防科学与技术,2021,40(7):977-982. |
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| 作者姓名： | 陈研 王天雄 陶浩文 徐志胜 |
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| 作者单位： | 1. 南京市公共工程建设中心,江苏南京210004；2. 中南大学土木工程学院，湖南长沙410075 |
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| 基金项目： | 中央高校基本科研业务费专项资金(2019zzts075)；湖南省研究生科研创新项目(CX20190131) |
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| 摘 要： | 隧道射流通风系统中的射流风机布置方式可以直接影响到隧道通风系统的通风效率，其中曲线隧道的射流流场分布规律又区别于一般直线隧道。本文以建宁西路地下互通工程为依托，采用CFD 软件针对曲线隧道中射流风机的横向间距与布置位置、风机偏转角度、纵向间距等参数进行数值模拟，分析了不同工况下的流场分布、风机升压能力。结果表明：在曲线隧道中，当射流风机横向间距为2 倍风机直径，且靠近隧道凸面朝凹面区偏转5°~10°时风机下游流场分布较为均匀，隧道通风效果良好；射流风机纵向布置间距不宜大于100 m。
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| 关 键 词： | 曲线隧道 纵向通风 折减系数 偏转角度 数值模拟 |
Study on optimization of ventilation efficiency about jet fan in curved tunnel |
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| CHEN Yan,WANG Tian-xiong,TAO Hao-wen,XU Zhi-sheng.Study on optimization of ventilation efficiency about jet fan in curved tunnel[J].Fire Science and Technology,2021,40(7):977-982. |
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| Authors: | CHEN Yan WANG Tian-xiong TAO Hao-wen XU Zhi-sheng |
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| Affiliation: | 1. Nanjing Public Engineering Construction Center, Jiangsu Nanjing 210004, China; 2. School of Civil Engineering, Central South University, Hunan Changsha 410075, China |
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| Abstract: | Based on the underground interchange project of Jianning West Road, CFD software was used to simulate the horizontal spacing and arrangement position of the jet fans in the curved tunnel, the deflection angle of the fans, the longitudinal spacing, then the flow field distribution and jet fans booster capacity under different cases were analyzed. The results showed that in a curved tunnel, when the lateral spacing of the jet fan is twice the diameter of the fan, and it is close to the convex surface of the tunnel and deflected by 5° to 10° toward the concave area, the downstream flow field distribution of the fan is relatively uniform, and the tunnel ventilation effect is good. The longitudinal spacing of jet fans should not be greater than 100 m. |
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| Keywords: | curve tunnel longitudinal ventilation reduction factor deflection angle numerical simulation |
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