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Influence of Draft Curtains on Sprinkler Activation - Comparison of Three Different Models

Författare

Summary, in English

This article investigates the importance of using draft curtains to obtain faster sprinkler activation with three different models-two computational fluid dynamics (CFD) models (CFX 4.4 and fire dynamics simulator (FDS) 4.07) and a zone model (Argos) containing a ceiling-jet formula - for an actual scenario in an entertainment center in Denmark. It is found that a draft curtain has some effect on sprinkler activation, reducing activation time from 8% to 15%, depending on the model implemented. The positions of the sprinklers with in the vertical computational grid of the CFD simulations have a greater influence on the activation of the sprinkler, where FDS is more sensitive than CFX. It is confirmed that heat transfer from the ceiling jet to the ceiling has little influence on the results. The zone model with a ceiling-jet formula gives 10—20% slower sprinkler activation than the CFD results when the sprinkler is close to the ceiling, but is still considered very useful in view of the faster calculation time.

Publiceringsår

2008

Språk

Engelska

Sidor

29-54

Publikation/Tidskrift/Serie

Journal of Fire Protection Engineering

Volym

18

Issue

1

Dokumenttyp

Artikel i tidskrift

Förlag

SAGE Publications

Ämne

  • Other Civil Engineering
  • Building Technologies

Nyckelord

  • sprinkler activation
  • fire safety engineering
  • Argos
  • FDS
  • ceiling jet
  • draft curtain
  • CFX

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1042-3915