Steel and Composite Structures

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Numerical predictions of the time-dependent temperature field for the 7th Cardington compartment fire test

  • Lopes, Antonio M.G. (Department of Mechanical Engineering, University of Coimbra) ;
  • Vaz, Gilberto C. (Department of Mechanical Engineering, ISEC, Polytechnic Institute of Coimbra) ;
  • Santiago, Aldina (Department of Civil Engineering, University of Coimbra)
  • Received : 2004.12.09
  • Accepted : 2005.05.23
  • Published : 2005.12.25
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Abstract

The present work reports on a numerical simulation of a compartment fire. The fire was modeled using a simplified approach, where combustion is simulated as a volumetric heat release. Computations were performed with the commercial code CFX 5.6. Radiation was modeled with a differential approximation (P1 model), while turbulence effects upon the mean gas flow were dealt with a SST turbulence model. Simulations were carried out using a transient approach, starting at the onset of ignition. Results are provided for the temperature field time evolution, thus allowing a direct comparison with the analytical and experimental data. The high spatial resolution available for the results proved to be of great utility for a more detailed analysis of the thermal impact on the steel structure.

Keywords

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