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http://dx.doi.org/10.5762/KAIS.2017.18.3.115

Flow control of air blowing and vacuuming module using Coanda effect  

Jeong, Wootae (Transportation Environmental Research Team, Korea Railroad Research Institute)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.3, 2017 , pp. 115-121 More about this Journal
Abstract
The efficiency of railway track cleaning vehicle for eliminating fine particulate matter (PM10 and PM2.5) in a subway tunnel depends strongly on the structure of the air blowing and suction system installed under the train. To increase the efficiency of underbody suction system, this paper proposes a novel method to use the Coanda effect for the air blower and dust suction module. In particular, through Computational Fluid Dynamics (CFD) analysis, the flow control device induced by the Coanda effect enables an increase in the overall flow velocity and to stabilize the flow distribution of the suction module at a control angle of $90^{\circ}$. In addition, the flow velocity drop at the edge of the air knife-type blower can be improved by placing small inserts at the edge of the blower. Those 4 modular designs of the dust suction system can help remove the dust accumulated on the track and tunnel by optimizing the blowing and suction flows.
Keywords
Coanda effect; Computational Fluid Dynamics; Dust cleaning; Particulate matter; Suction system;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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