Unsteady rans modeling of water-spray suppression for large-scale compartment pool fires

Suk Goo Yoon, Ho Young Kim, Paul E. Desjardin, John C. Hewson, Sheldon R. Tieszen, Thomas K. Blanchat

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper presents a computational study of the effect of water-spray characteristics on the suppression of a large-scale (2 m × 2 m) JP-8 pool fire in a 10 m × 10 m × 10 m compartment with an open ceiling. The numerical model is based on an unsteady Reynolds-averaged Navier-Stokes formulation using a stochastic separated flow approach for the droplets that includes detailed descriptions of the interaction between water droplets and fire plume. Simulation results indicate that water-spray injection causes the gas temperature to rise due to the initial enhancement of the turbulent mixing. A threshold suppression condition is achieved when the injected droplet carries enough momentum (injection speed range is 20-80 m/s) to penetrate the fire plume and evaporate in the flame regions where most of the gas-phase combustion is taking place. In addition, the droplet size (ranging from 100-800 m) should be small enough to yield quick evaporation when in contact with the flame surface for efficient cooling. Based on a parametric study, a preferred fire suppression configuration is recommended for the systems considered. Copyright ® 2007 Begell House, Inc.

Original languageEnglish
Pages (from-to)1-45
Number of pages45
JournalAtomization and Sprays
Volume17
Issue number1
Publication statusPublished - 2007 Apr 20

Fingerprint

compartments
sprayers
Fires
retarding
Water
water
plumes
flames
Gases
spray characteristics
injection
separated flow
ceilings
turbulent mixing
Ceilings
gas temperature
Numerical models
Momentum
Evaporation
evaporation

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)
  • Chemical Engineering(all)
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Yoon, S. G., Kim, H. Y., Desjardin, P. E., Hewson, J. C., Tieszen, S. R., & Blanchat, T. K. (2007). Unsteady rans modeling of water-spray suppression for large-scale compartment pool fires. Atomization and Sprays, 17(1), 1-45.

Unsteady rans modeling of water-spray suppression for large-scale compartment pool fires. / Yoon, Suk Goo; Kim, Ho Young; Desjardin, Paul E.; Hewson, John C.; Tieszen, Sheldon R.; Blanchat, Thomas K.

In: Atomization and Sprays, Vol. 17, No. 1, 20.04.2007, p. 1-45.

Research output: Contribution to journalArticle

Yoon, SG, Kim, HY, Desjardin, PE, Hewson, JC, Tieszen, SR & Blanchat, TK 2007, 'Unsteady rans modeling of water-spray suppression for large-scale compartment pool fires', Atomization and Sprays, vol. 17, no. 1, pp. 1-45.
Yoon, Suk Goo ; Kim, Ho Young ; Desjardin, Paul E. ; Hewson, John C. ; Tieszen, Sheldon R. ; Blanchat, Thomas K. / Unsteady rans modeling of water-spray suppression for large-scale compartment pool fires. In: Atomization and Sprays. 2007 ; Vol. 17, No. 1. pp. 1-45.
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