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

Husted, Bjarne LU and Holmstedt, Göran LU (2008) In Journal of Fire Protection Engineering 18(1). p.29-54
Abstract
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
sprinkler activation, fire safety engineering, Argos, FDS, ceiling jet, draft curtain, CFX
in
Journal of Fire Protection Engineering
volume
18
issue
1
pages
29 - 54
publisher
SAGE Publications Inc.
external identifiers
  • wos:000255804600002
  • scopus:38549170906
ISSN
1042-3915
DOI
10.1177/1042391507080813
language
English
LU publication?
yes
id
8fe9d36c-2af2-4f1b-9701-d3be271c3c6f (old id 1026954)
date added to LUP
2008-02-07 12:04:47
date last changed
2017-01-01 04:31:46
@article{8fe9d36c-2af2-4f1b-9701-d3be271c3c6f,
  abstract     = {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.},
  author       = {Husted, Bjarne and Holmstedt, Göran},
  issn         = {1042-3915},
  keyword      = {sprinkler activation,fire safety engineering,Argos,FDS,ceiling jet,draft curtain,CFX},
  language     = {eng},
  number       = {1},
  pages        = {29--54},
  publisher    = {SAGE Publications Inc.},
  series       = {Journal of Fire Protection Engineering},
  title        = {Influence of Draft Curtains on Sprinkler Activation - Comparison of Three Different Models},
  url          = {http://dx.doi.org/10.1177/1042391507080813},
  volume       = {18},
  year         = {2008},
}