fully coupled numerical simulation of fire in tunnels: from fire scenario to structural response
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ID: 165640
2013
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Abstract
In this paper we present an efficient tool for simulation of a fire scenario in a tunnel. The strategy adopted is based on a 3D-2D coupling technique between the fluid domain and the solid one. So, the thermally driven CFD part is solved in a three dimensional cavity i.e. the tunnel, and the concrete part is solved on 2D sections normal to the tunnel axis, at appropriate intervals. The heat flux and temperature values, which serve as coupling terms between the fluid and the structural problem, are interpolated between the sections. Between the solid and the fluid domain an interface layer is created for the calculation of the heat flux exchange based on a “wall law”. In the analysis of the concrete structures, concrete is treated as a multiphase porous material. Some examples of application of this fully coupled tool will be shown.
| Reference Key |
f.2013matecfully
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|---|---|
| Authors | ;Pesavento F.;Schrefler B.A.;Gawin D.;Principe J. |
| Journal | acta botânica brasílica |
| Year | 2013 |
| DOI |
10.1051/matecconf/20130605005
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