Fire Curtains / Low Traffic Load / aignertunnel

Aigner Tunnel Technology GmbH, Dieselstraße 13, 4623 Gunskirchen bei Wels, Austria, Tel.: +43 / 7246 / 20 200 - 0, E-Mail: office@aigner-tunnel.com

Low Traffic Load

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Low Traffic Load

FIRE CURTAINS

>> Example 2

The following examples were visualized using a computer simulation (CFD). In fact, however, the function was also demonstrated in a practical test in the currently probably safest tunnel in Roppen (Austria).

Draft 1: Initial Situation

Under conditions of low traffic load, from the start there is an airflow against the direction of the traffic in the tunnel 1 . Due to the low or absent piston effects of the vehicles, airflow towards the entry portal dominates.

Draft 2: Accident

When fire breaks out due to an accident 1 , the vehicles before the site of the accident come to a halt 2 , those beyond it leave the tunnel 3 . The original direction of the airflow is maintained, blowing the rising smoke towards the stalled vehicles 4 .