Aerodynamics, Ventilation & Fire in Tunnels 2017

On the 13th of september, FESG presented their work on the 17th International Symposium on Aerodynamics, Ventilation & Fire Tunnels (ISAVFT 2017 in Lyon, France).

FESG had the opportunity to share knowledge about the state of the art in tunnel’s ventilation. There were many interesting topics, including:

  • Interaction between designers and fire services
  • New energy carriers and how to implement them in fire risk analysis
  • Interaction between ventilation and suppression in underground structures
  • Optimising ventilation strategies in order to limit evacuation times

The conference allowed FESG to be challenged on their methodology and solutions by other world leading experts. This allows FESG to continuously provide its clients with new and cost-effective solutions.

The paper was a joint collaboration between FESG and Agentschap Wegen en Verkeer and discussed the upgrade of the ventilation system in the Craeybeckxtunnel in Antwerp (BE). The design was innovative in the way the whole tunnel was put in underpressure in order to limit the life cycle cost by avoiding the need of overpressure systems in emergency stair cases. The use of 3D and 1D simulations for the analysis of the ventilation system was necessary due to the complexity of the setup. Several batteries of jet fans were provided and in order to take the mutual effect in terms of efficiency 3D calculations were necessary.

FESG is satisfied by the validation of their work by other international experts and looks forward to apply similar methodologies in tunnel, metro and car park projects.

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