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Modeling of Low-temperature oxidation and combustion of droplets

  • Physical Chemistry
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Abstract

Key features of radiation extinguishing of spherical hot flame around a single droplet with its subsequent low-temperature oxidation and combustion under microgravity conditions—a phenomenon discovered in experiments onboard the International Space Station—have been reproduced using the mathematical model of droplet combustion and detailed kinetic mechanism of n-heptane oxidation and combustion. It has been demonstrated that experimentally observed repeated temperature flashes were blue flame flashes, and their duration was determined by the hydrogen peroxide decomposition time. In addition to this phenomenon, calculations predict the existence of new modes of low-temperature oxidation and combustion of droplets without the hot flame stage. In such modes, the basic reaction is concentrated very close to the droplet surface, and fuel vapor reacts in it only partially.

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Authors and Affiliations

  1. Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 1119991, Russia

    S. M. Frolov, V. Ya. Basevich & S. N. Medvedev

  2. National Research Nuclear University MEPhI, Kashirskoe sh. 31, Moscow, 115409, Russia

    S. M. Frolov

Authors
  1. S. M. Frolov
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  2. V. Ya. Basevich
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  3. S. N. Medvedev
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Corresponding author

Correspondence to S. M. Frolov.

Additional information

Original Russian Text © S.M. Frolov, V.Ya. Basevich, S.N. Medvedev, 2016, published in Doklady Akademii Nauk, 2016, Vol. 470, No. 4, pp. 427–430.

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Frolov, S.M., Basevich, V.Y. & Medvedev, S.N. Modeling of Low-temperature oxidation and combustion of droplets. Dokl Phys Chem 470, 150–153 (2016). https://doi.org/10.1134/S0012501616100018

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  • DOI: https://doi.org/10.1134/S0012501616100018

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