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SUMMARY:Fire in tunnels: steps towards a real time solution
DTSTART:20110505T121500
DTSTAMP:20260407T194939Z
UID:83ad4aa13ce41f994c0f641f373c7778ee459db5a5624b58b01cf542
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Bernhard Schrefler\nThe availability of an efficient too
 l for simulation of a fire scenario in a tunnel is of paramount importance
  for fire safety management in emergency situations\, for training of fire
  brigades prior to emergency cases in order to be able take the right deci
 sions when needed and to evaluate measures geared to increase the resistan
 ce of existing tunnel vaults against spalling. We have developed such a to
 ol which takes the thermal fluid-structural coupling in a tunnel fire full
 y into account. The simulation of a realistic fire scenario is still a tim
 e consuming task and measures have to be taken to reduce the computing tim
 e. It is neither possible to disregard the enormous heat sink the tunnel v
 ault represents with its phase changes and chemical reactions nor to simpl
 ify the physical model. Up to now we have chosen a 3D-2D coupling strategy
  where the thermally driven CFD part is solved in a three dimensional cavi
 ty and the concrete behaviour is solved on 2D sections normal to the tunne
 l axis\, at appropriate intervals. The aim of our current research effort 
 is twofold: realize a true 3D-3D coupling and reduce drastically the solut
 ion time. The way for achieving this is through adoption of an extremely f
 ast equation solver which can achieve a speed-up of up to 3600 times and t
 he adoption of the Proper Generalized Decomposition PDG for a fast 3D solu
 tion of the problem of heated concrete. Steps in this direction as well as
  the general model will be shown.\n\nDr. Bernhard Schrefler is professor o
 f Structural Mechanics at the University of Padua and Secretary General of
  CISM. He obtained his Ph.D. and D.Sc. at the University of Wales. He rece
 ived honorary doctorates from the St.Petersburg State Technical University
 \, from the University of Technology in Lodz\, from the University of Wale
 s-Swansea\, from the Leibniz University of Hanover\, from the Russian Acad
 emy of Sciences and from the Ecole Normale Superieure\, He is recipient of
  the Computational Mechanics Award\, the IACM Award\, the Biot Medal of AS
 CE and the Euler Medal of ECCOMAS. He has published close to 200 papers in
  refereed Journals on structural engineering\, soil mechanics\, environmen
 tal mechanics\, and biomechanics and on technology for nuclear fusion\, an
 d has written or edited 33 books. His main research interests are in multi
 -scale analysis and porous media mechanics including environmental geomech
 anics.
LOCATION:GC C3 30
STATUS:CONFIRMED
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