Optimization of emergency ventilation strategies in a curved section of a road tunnel

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Conference13th International Symposium on Aerodynamics and Ventilation of Vehicle Tunnels: 13 May 2009, New Brunswick, New Jersey, USA
Pages167181; # of pages: 15
Subjecttunnels, fires, emergency ventilation, fire and smoke control, and visibility; Tunnels; Design fires/Fire modeling; Performance of:
AbstractBoth numerical and experimental studies were performed to evaluate the effectiveness of in-place emergency ventilation strategies to control smoke spread in a fire event in a roadway tunnel. The experimental study was conducted to provide the necessary initial and boundary conditions for the numerical phase of the investigation. A fire size of 1 MW was used in all fire tests to minimize the risk of damage to the tunnel and its associated systems while producing reliable data for visualizing smoke movement in the tunnel. The numerical study used Computational Fluid Dynamics technique to investigate smoke removal in the tunnel for a larger fire size of 30 MW (bus or truck on fire). In total, four field fire tests and seven numerical simulations were conducted. Based on the study results, recommendations were made to optimize tunnel ventilation scenarios. This article presents the details of the study as well as the recommendations made.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number51289
NPARC number20373761
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Record identifierf1e5de26-15c0-4876-abbc-73fb0732382c
Record created2012-07-23
Record modified2016-05-09
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