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

    Fingerprint

    Fog
    Water
    Fires
    Steam
    Large eddy simulation
    Hinges
    Water vapor
    Turbulence
    Gases
    Oxygen
    Radiation
    Experiments

    Keywords

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

    Cite this

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    title = "Large scale simulation of high pressure water mist systems",
    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.",
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    author = "Topi Sikanen and Jukka Vaari and Simo Hostikka",
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    doi = "10.2495/MPF130071",
    language = "English",
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    Large scale simulation of high pressure water mist systems. / Sikanen, Topi; Vaari, Jukka; Hostikka, Simo.

    In: WIT Transactions on Engineering Sciences, Vol. 79, 2013, p. 77-88.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Large scale simulation of high pressure water mist systems

    AU - Sikanen, Topi

    AU - Vaari, Jukka

    AU - Hostikka, Simo

    PY - 2013

    Y1 - 2013

    N2 - 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.

    AB - 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.

    KW - interphase momentum transfer

    KW - lagrangian-eulerian

    KW - large eddy simulation

    KW - large scale

    KW - turbulence modeling

    KW - water mist

    U2 - 10.2495/MPF130071

    DO - 10.2495/MPF130071

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    EP - 88

    JO - WIT Transactions on Engineering Sciences

    JF - WIT Transactions on Engineering Sciences

    SN - 1743-3533

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