CLC number: U453.5
On-line Access: 2019-01-29
Received: 2018-04-09
Revision Accepted: 2018-09-14
Crosschecked: 2018-12-06
Cited: 0
Clicked: 3748
Ming-nian Wang, Tao Deng, Li Yu, Xu Wang. A uniform air flow distribution design strategy for use in tunnel transverse ventilation systems[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A1800230 @article{title="A uniform air flow distribution design strategy for use in tunnel transverse ventilation systems", %0 Journal Article TY - JOUR
Abstract: This paper mainly provides 1) interesting reference data of loss coefficient values for a particular type of damper and 2) an elegant analytical method for designing duct systems for equal airflow from each outlet.
隧道横向式通风系统中的等量送风设计方法研究创新点:1. 结合量纲分析与数值模拟分析方法得出多页对开式风阀的风阻特性; 2. 通过对等量送风道内外部建立一元伯努利方程,得出等量送风管道内的静压分布规律; 3. 结合风阀风阻特性以及管道内外静压分布规律,得出一种基于压力平衡的风阀叶片开角理论调节方法,且该方法可以实现各风孔送风风量的理论控制. 方法:1. 利用量纲分析方法得出多页对开式风阀风阻特性的影响因素; 2. 利用二维和三维数值分析方法计算得出不同叶片开角和风速比值条件下的风阀阻力系数(表2和图6); 3. 通过理论分析,在送风道内部和风阀内外侧断面间建立一元伯努利方程,得到风道内的风速与静压分布规律,以及通过调节开角实现风量控制的理论设计方法; 4. 利用数值分析方法对研究得到的等量送风理论设计方法进行可行性验证(图9和10). 结论:1. 影响多页对开式风阀风阻特性的2个因素分别是风阀的叶片开角和风道与风阀内的风速比值; 2. 结合等量送风管道内静压分布规律以及风阀风阻特性,可以通过调整叶片开角实现风阀送风风量的理论控制; 3. 数值验证结果表明,通过控制叶片开角来实现风阀出风风量的理论控制方法具备可行性且精度较高. 关键词组: Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article
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