Large scale simulation of high pressure water mist systems

Topi Sikanen, Jukka Vaari, Simo Hostikka

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    Water mists systems are used to protect people and property from fires. They suppress fires by three main mechanisms: removal of heat from the gases, displacement of oxygen by water vapour and attenuation of radiation by droplets. Correct prediction of these mechanisms hinges on accurate modeling of droplet transport. This paper discusses the modeling and simulation of high speed water mist systems using Large Eddy Simulation and a Lagrangian description of the spray. The focus is on the droplet transport. Particular attention is given to the droplet injection model and sub models for coupling of the dispersed and continuous phases. Effects of turbulence modeling on droplet transport is explored. The modeling results are compared to experimental data from both small and large scale experiments.
    Original languageEnglish
    Pages (from-to)77-88
    JournalWIT Transactions on Engineering Sciences
    Volume79
    DOIs
    Publication statusPublished - 2013
    MoE publication typeNot Eligible
    Event7th International Conference on Computational and Experimental Methods in Multiphase and Complex Flow, MPF 2013 - Coruna, Spain
    Duration: 3 Jul 20135 Jul 2013

    Keywords

    • interphase momentum transfer
    • lagrangian-eulerian
    • large eddy simulation
    • large scale
    • turbulence modeling
    • water mist

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