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  • Laminar diffusion flame propagation over thermally destructing material

    Paper number

    IAC-17,A2,2,3,x38349

    Author

    Prof. Nickolay N. Smirnov, Moscow Lomonosov State University, Russian Federation

    Coauthor

    Ms. Veronika Tyurenkova, Scientific research Institute for System Studies Russian Academy of Sciences, Russian Federation

    Coauthor

    Ms. Maria Smirnova, Moscow Lomonosov State University, Russian Federation

    Year

    2017

    Abstract
    N.N. Smirnov, V.V.Tyurenkova, M.N.Smirnova
    
    а Scientific Research Institute for System Analysis of Russian Academy of Sciences, Moscow 117218, Russia 
    b M.V.Lomonosov Moscow State University, Leninskie Gory, 1,Moscow 119992, Russia 
    c Saint Petersburg State Polytechnical University, 29 Politechnicheskaya Str., St.Petersburg 195251, Russia
    
    The problem of condensed material surface burning in a flow of oxidant in weightlessness is regarded theoretically. The influence of buoyancy on flames is so intrinsic to our experience that it is difficult to predict how fires will behave in low gravity.  Typical hydrocarbon flame temperatures cause a seven-fold reduction in the density which drives the familiar buoyant flow.
    Fire is a catastrophic hazard for spaceflight and the spread and growth of a fire, combined with its interactions with the vehicle cannot be expected to scale linearly.  In fact, every occupied structure on Earth has been the subject of full scale fire testing whereas such testing has never occurred in space owing to the complexity, cost, risk and absence of a safe location.  Thus, there is a gap in knowledge of fire behavior in spacecraft.
    In the present paper theoretical solution for the problem of surface fire spread is provided. Temperature and velocity profiles above condensed material are determined theoretically within the frame of boundary layer approximation under the assumption of fuel gasification and gas phase chemical reacting in a diffusion flame. Counter flow flame spread velocity is developed based on the concept of thermally thin fuel layer.
    Abstract document

    IAC-17,A2,2,3,x38349.brief.pdf

    Manuscript document

    IAC-17,A2,2,3,x38349.docx (🔒 authorized access only).

    To get the manuscript, please contact IAF Secretariat.