Volume 26 Issue 9
Sep.  2011
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Article Navigation >  Journal of Aerospace Power  > 2011  >  26(9): 1921-1927
HOU Ling-yun, YANG Jin, MA Xue-song, LIU Wei. Influences of vitiation air from ethanol-fueled heating on kerosene-fueled supersonic combustion[J]. Journal of Aerospace Power, 2011, 26(9): 1921-1927.
Citation: HOU Ling-yun, YANG Jin, MA Xue-song, LIU Wei. Influences of vitiation air from ethanol-fueled heating on kerosene-fueled supersonic combustion[J]. Journal of Aerospace Power, 2011, 26(9): 1921-1927.
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Influences of vitiation air from ethanol-fueled heating on kerosene-fueled supersonic combustion

  • 1.

    School of Aerospace, Tsinghua University, Beijing 100084, China

  • 2.

    Beijing Power Machinery Research Institute, Aerodynamic Missile Technology Academy of China Aerospace Science and Industry Comporation, Beijing 100074, China

  • Received Date: 2010-10-28
  • Rev Recd Date: 2010-12-27
  • Publish Date: 2011-09-28
    Abstract
  • The influences of vitiation air generated by ethanol-fueled combustion heating on the performances of kerosene-fueled supersonic combustion were studied numerically when the inflow Mach number at the inlet of combustor is 2.5.Premixed burner-stabilized flame model and ethanol-air reaction mechanism with 61 species and 388 steps were used to simulate the combustion in the heater,helping to obtain the components of high-enthalpy air fluid.The reduced reaction mechanism with 17 species and 30 steps were used to simulate the kerosene-fueled supersonic combustion.The contributions of seven main vitiated species such as H2O,CO2,O,OH,H,CO,H2 to the performance of the supersonic combustion were analyzed.Comparing with the cases of electric-heating on the ground and high altitude at the height of 25km,vitiation air causes the increase of combustion efficiency and internal thrust because of the free-radical's function,decrease of averaged molecular mass and increase of averaged specific heat at constant pressure.

     

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