Numerical modeling and experimental measurements of a high speed solid-cone water spray for use in fire suppression applications

S. S. Yoon, J. C. Hewson, P. E. Desjardin, D. J. Glaze, A. R. Black, R. R. Skaggs

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Experimental measurements and numerical simulations of a high-speed water spray are presented. The numerical model is based on a stochastic separated flow technique that includes submodels for droplet dynamics, heat and mass transfer, and droplet-droplet collisions. Because the spray characteristics near the nozzle are difficult to ascertain, a new method for initialization of particle diameter size is developed that assumes a Rosin-Rammler distribution for droplet size, which correctly reproduces experimentally measured Sauter and arithmetic mean diameters. By relating the particle initialization to lower moments of the droplet statistics, it is possible to take advantage of measurements without substantial penalties associated with the greater experimental uncertainty of individual droplet measurements. Overall, very good agreement is observed in the comparisons of experimental measurements to computational predictions for the streamwise development of mean drop size and velocity. In addition, the importance of modeling droplet-droplet collisions is highlighted with comparison of selected droplet-droplet collision models.

Original languageEnglish
Pages (from-to)1369-1388
Number of pages20
JournalInternational Journal of Multiphase Flow
Volume30
Issue number11
DOIs
Publication statusPublished - 2004 Nov
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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