An assessment of the importance of secondary spray on a water sprinkler scenario

Alexander L. Brown, Sam S. Yoon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recent development efforts have resulted in new models that are capable of predicting water spray interactions with solid surfaces for a wide range of drop sizes and velocities. These models provide a reasonable approximation to single drop impact events, and significantly improve the expected accuracy of the splash. The models are implemented in the Vulcan software, a CFD code for fire modeling. We wanted to understand how important the splash is to a suppression scenario and the implications of common simplifying assumptions. A scenario with several rectangular objects located beneath a water suppression system is examined. This scenario was designed to be representative of an industrial fire and suppression situation. We compare the deposition masses on the surfaces for three cases, one with the recently developed model, another assuming no splash, and another assuming all splashing drops eject an excessive fraction of their mass. The results of the higher fidelity predictions compared with the more commonly employed and simpler assumptions suggest the importance of splashing to the outcome of an industrial water sprinkler fire suppression event.

Original languageEnglish
Title of host publicationProceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages125-131
Number of pages7
ISBN (Print)9780791843765
DOIs
Publication statusPublished - 2010
Event2009 ASME International Mechanical Engineering Congress and Exposition, IMECE2009 - Lake Buena Vista, FL, United States
Duration: 2009 Nov 132009 Nov 19

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume3

Other

Other2009 ASME International Mechanical Engineering Congress and Exposition, IMECE2009
CountryUnited States
CityLake Buena Vista, FL
Period09/11/1309/11/19

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Brown, A. L., & Yoon, S. S. (2010). An assessment of the importance of secondary spray on a water sprinkler scenario. In Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009 (pp. 125-131). (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 3). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2009-11671