Browse > Article
http://dx.doi.org/10.7731/KIFSE.2012.26.5.105

A Numerical Study of the Effect of Sprinkler Spray on the Flow Characteristics Induced by Fire  

Kim, Sung-Chan (Dept. of Fire Safety, Kyungil Univ.)
Publication Information
Fire Science and Engineering / v.26, no.5, 2012 , pp. 105-110 More about this Journal
Abstract
The present study investigates the effects of sprinkler spray on fire driven flow characteristics in a compartment based on numerical approach. The FDS (Fire Dynamics Simulator), a widely used fire field model, was used to simulate the fire induced flow and sprinkler spray and a series of grid independence tests have been performed to obtain the optimal grid size. In order to validate the result predicted by FDS model, the calculated results were compared with experimental results of Magnone et al.. The FDS model matches quite well to experiments in temperature profile and mass flux through doorway, however, the discrepancy between the FDS model and experiments increases with increasing water discharge rate. As with previous study, the FDS calculation also shows a decrease of mass flow rate of combustion products through doorway due to the sprinkler spray. This study can contribute to optimize the sprinkler system design and verify the validity of the fire field model with sprinkler spray.
Keywords
Fire safety; Sprinkler; Spray; Doorway flow; Compartment fire;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 J. J. Jung, D. G. Nam and W. S. Lim, "A Study on the Performance of a Sprinkler System with Direct-Coupled Waterworks by Full-Scale Fire Test", Journal of Korean Institute of Fire Science & Engineering, Vol. 25, No. 6, pp. 39-43 (2011).
2 S. K. Roh, E. G. Ham and D. C. Kim, "The Study of Fire Suppression Capability of Sprinkler System for Wooden Cultural Properties", Journal of Korean Institute of Fire Science & Engineering, Vol. 25, No. 6, pp. 51-57 (2011).
3 J. P. Crocker, "The Effect of Sprinkler Sprays on Fire Induced Mass Flow Rates", Ms. Thesis, Fire Protection Engineering, Worcester Polytechnic Institute, US (2008).
4 J. P. Crocker and B. Xiao, "Investigating the Effects of Sprinkler Sprays on Fire Induced Doorway Flows: A Two-Part Study", Technical Report, TYCO Fire Suppression & Building Products (2010).
5 Z. Magnone, V. Adams, Z. Han, S. Southard, C. Su, N. Dembsey, J. Morgan and P. Beaulieu, "Sprinkler Spray Effects on Combustion Products Leaving a Compartment", SFPE Annual Conference (2011).
6 K. McGrattan, R. McDermott, S. Hostikka and J. Floyd, "Fire Dynamics Simulator (Version 5), User's Guide", NIST Special Publication 1019-5 (2010)
7 ANSI/UL 1626, "Standard for Safety of Residential Sprinklers fore Fire Protection Service", UL 1626 Ed. 4 (2008).
8 S. V. Apte, M. Gorokhovski and P. Moin, "LES of Atomizing Spray with Stochastic Modeling of Secondary Breakup", International Journal of Multiphase Flow, Vol. 29, No. 9, pp. 1503-1522 (2003).   DOI   ScienceOn
9 S. C. Kim, S. W. Lee and W. J. Park, "A Sensitivity Study of the Number of Parcels to the Numerical Simulation of Sprinkler Sprays", Journal of Korean Institute of Fire Science & Engineering, Vol. 23, No. 1, pp. 48-54 (2009).