Fully coupled numerical simulation of fire in tunnels: From fire scenario to structural response

F. Pesavento, B. A. Schrefler, D. Gawin, J. Principe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationConcrete Spalling Due to Fire Exposure
Subtitle of host publicationProceedings of the 3rd International Workshop, IWCS 2013
PublisherEDP Sciences
ISBN (Print)9782759810741
DOIs
StatePublished - 2013
Event3rd International Workshop on Concrete Spalling Due to Fire Exposure, IWCS 2013 - Paris, France
Duration: Sep 25 2013Sep 27 2013

Publication series

NameMATEC Web of Conferences
Volume6
ISSN (Electronic)2261-236X

Other

Other3rd International Workshop on Concrete Spalling Due to Fire Exposure, IWCS 2013
CountryFrance
CityParis
Period9/25/139/27/13

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Engineering(all)

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