Volume 35 Issue 1
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QIN Wenjin, LU Dengbiao, LIU Hao. Effects of gas state equation on n-dodecane jet combustion[J]. Journal of Aerospace Power, 2020, 35(1): 66-74. doi: 10.13224/j.cnki.jasp.2020.01.008
Citation: QIN Wenjin, LU Dengbiao, LIU Hao. Effects of gas state equation on n-dodecane jet combustion[J]. Journal of Aerospace Power, 2020, 35(1): 66-74. doi: 10.13224/j.cnki.jasp.2020.01.008
shu

Effects of gas state equation on n-dodecane jet combustion

doi: 10.13224/j.cnki.jasp.2020.01.008
  • 1.

    College of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China

  • 2.

    Beijing Aerospace Institute for Metrology and Measurement Technology,China Academy of Launch Vehicle Tecnology,China Aerospace Science and Technology Corporation,Beijing 100076,China

  • Received Date: 2019-07-10
  • Publish Date: 2020-01-28
    Abstract
  • The n-dodecane was selected as an alternative fuel of aviation kerosene in this study. Its jet combustion characteristics under supercritical condition were studied by using large eddy simulation and detailed chemical reaction kinetics. The effects of gas state equations on jet morphology, penetration, temperature, and mixing fraction were also investigated. The simulation results showed that ideal gas and real gas state equations had negligible effect on the jet penetration and macroscopic shape, while the real gas state equation had advantage to reflect the liquid fuel jet characteristics under supercritical condition, such as mixing fraction and temperature. In terms of combustion, there was an error of 10% between the simulated ignition delay and the experiment, the flame lift-off length, flame shape and soot were also well predicted, and the distribution of NOx and OH was highly consistent with the temperature field.

     

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