Design Fires in Road Tunnels (2011) / Chapter Skim
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Pages 40-44
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A specific CFD model called SOLVENT was developed as part of the Memorial Tunnel Fire Ventilation Test Program for simulating road tunnel fluid flow (ventilation) , heat transfer, and smoke transport.
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Another possibility was that the observed flames at the east portal were a result of unsteady evaporation of the gasoline. It was assumed that the gasoline evaporated at a constant rate for 40 min (about 10 kg/s or 22 lb/s)
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• Trapped traffic behind the fire incidence -- Trapped traffic creates a significant obstruction to the airflow. This results in substantial resistance to the airflow and obstructions to the air jets developed by the tunnel ventilation system.
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For example, this technique does not correctly describe the stratification in the instance when the longitudinal velocity is lower than Q Sfire tunnel is the name in 2D or 3D ( ) ,21 44 the critical value.
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From page 44... ...
Most of the commercially available CFD codes used in this synthesis report have been validated against some tests; however, at times users try to stretch the software application to areas where the applications have not been validated. For example, it is difficult to find a CFD program that has been validated for sprinkler system application in full-scale tunnel tests.
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