- Author
-
Ingason, H.
|
Nireus, K.
|
Werling, P.
- Title
- Fire Tests in a Blasted Rock Tunnel.
- Coporate
- Defence Research Establishment, Tumba, Sweden
- Report
-
FOA-R-97-00581-990-SE,
November 1997,
182 p.
- Keywords
-
tunnels
|
smoke spread
|
ventilation
|
heat release rate
|
optical density
|
computational fluid dynamics
- Identifiers
- gas concentration
- Abstract
- Fire tests were performed in a blasted rock tunnel with an average cross-section of 9 m². The tunnel measured 3 m wide, 3 m high and 100 m long. the fire was located at two different locations in the tunnel. The tunnel is naturally ventilated through a 13 m high chimney located at one end of the tunnel. Tests with different ventilation conditions and fuels were carried out. The fuels used were: heptane, kerosene, methanol and wood cribs. The effects of vnetilation on the heat release rate and correlations between optical density and gas concentraion at different locations in the tunnel were investigated. Comprehensive data for future comparison with CFD (Computational Fluid Dynamics) models were also obtained.