Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CFD analysis of gas explosions in tunnels
In view of their particular geometry, road and rail tunnels have to be regarded as sites of major risk of devastating explosions. Therefore, appropriate design criteria and safety assessment procedures should be adopted for prevention purposes. However, only a few indications exist in the literature, due to the limited experimental results available at present on similar configurations. Computational Fluid Dynamic (CFD) codes represent a suitable approach to this problem. Indeed, specific CFD codes have been developed, which are able to predict the pressure profiles generated during gas explosions in large-scale environments and in the presence of high obstacle congestion. In this work, the Autoreagas code is used to predict the pressure, the blast wave propagation and the flame speed achieved in road and rail tunnels when varying the level of congestion and the amount of released fuel. Obtained results show that severe consequences can derive from the explosion of gas clouds in such environments, even if the fuel amount is relatively small, as that contained in a car tank.
CFD analysis of gas explosions in tunnels
In view of their particular geometry, road and rail tunnels have to be regarded as sites of major risk of devastating explosions. Therefore, appropriate design criteria and safety assessment procedures should be adopted for prevention purposes. However, only a few indications exist in the literature, due to the limited experimental results available at present on similar configurations. Computational Fluid Dynamic (CFD) codes represent a suitable approach to this problem. Indeed, specific CFD codes have been developed, which are able to predict the pressure profiles generated during gas explosions in large-scale environments and in the presence of high obstacle congestion. In this work, the Autoreagas code is used to predict the pressure, the blast wave propagation and the flame speed achieved in road and rail tunnels when varying the level of congestion and the amount of released fuel. Obtained results show that severe consequences can derive from the explosion of gas clouds in such environments, even if the fuel amount is relatively small, as that contained in a car tank.
CFD analysis of gas explosions in tunnels
CFD-Analyse von Gasexplosionen in Tunneln
Ciambelli, P. (Autor:in) / Bucciero, A. (Autor:in) / Maremonti, M. (Autor:in) / Salzano, E. (Autor:in)
Mediterranean Combustion Symposium, 1 ; 1343-1350
1999
8 Seiten, 3 Bilder, 3 Tabellen, 13 Quellen
Aufsatz (Konferenz)
Englisch
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