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SUMMARY:Sensitivity to explicit and implicit parameters for simulations of
  fires in confined spaces - Dr Pierre Carlotti (Laboratoire Central\, PP L
 ABCENT)
DTSTART:20151030T130000Z
DTEND:20151030T140000Z
UID:TALK61404@talks.cam.ac.uk
CONTACT:Antoine Debugne
DESCRIPTION:CFD simulations are used increasingly in fire safety studies t
 o evaluate the possibility of keeping a teanble atmosphere when evacuating
  a room in the event of a fire. Such simulations are subject to uncertaint
 ies arising from simplifications inherent in the modelling\, and uncertain
 ties in the parameters to be used for the calculations. These uncertaintie
 s can have a major impact on the results of the simulations\, and can lead
  to erroneous conclusions\, so it is vital to be able to assess the impact
  of uncertainties on the results of CFD simulations performed for fire saf
 ety studies. We propose to evaluate the influence of parameters (initial c
 onditions\, simulation parameters) on the result using small variations ar
 ound a reference case (so-called local analysis). We also show how a non-l
 ocal analysis of the influence of an implicit parameter can be performed. 
 This technique enables the identification of key parameters for which a sm
 all error in the estimation of their values may cause large variations of 
 the results. Such parameters require a more detailed study\, to reduce the
  consequences of the uncertainty in their value.
LOCATION:LR3B\, Inglis Building\, CUED.
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