The road tunnel air quality would easily deteriorate if the vehicle-emitted exhaust gas is not properly removed or diluted. As a result, one of the major functions of effective ventilation in road tunnels is to prevent harmful substances from affecting tunnel users and also to maintain good visibility inside for safety consideration. In the present study, a highly efficient three-dimensional computational fluid dynamics (3D CFD) simulation method has been developed and tested to model the traffic induced piston effect in a full scale road tunnel. This method is useful for the design of tunnel ventilation systems.
Efficient Numerical Investigation of Ventilation System Design of Road Tunnels
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Wu, DKH, Lin, YF, Pin, YF, & Tsui, DWS. "Efficient Numerical Investigation of Ventilation System Design of Road Tunnels." Proceedings of the ASME 2012 International Mechanical Engineering Congress and Exposition. Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D. Houston, Texas, USA. November 9–15, 2012. pp. 283-287. ASME. https://doi.org/10.1115/IMECE2012-93124
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