Volume 28 Issue 8
Aug.  2013
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Article Navigation >  Journal of Aerospace Power  > 2013  >  28(8): 1702-1710
SHI Xiao-juan, JI Hong-hu, SI Ren, LIAO Hua-lin. Comparative investigation of infrared radiation characteristics of axisymmetrical individual and mixing exhaust systems in turbofan engine[J]. Journal of Aerospace Power, 2013, 28(8): 1702-1710.
Citation: SHI Xiao-juan, JI Hong-hu, SI Ren, LIAO Hua-lin. Comparative investigation of infrared radiation characteristics of axisymmetrical individual and mixing exhaust systems in turbofan engine[J]. Journal of Aerospace Power, 2013, 28(8): 1702-1710.
shu

Comparative investigation of infrared radiation characteristics of axisymmetrical individual and mixing exhaust systems in turbofan engine

  • 1.

    College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • 2.

    China Gas Turbine Establishment, Aviation Industry Corporation of China, Chengdu 610500, China

  • Received Date: 2012-08-02
  • Publish Date: 2013-08-28
    Abstract
  • The infrared radiation (IR) characteristics of axisymmetrical individual and mixing exhaust systems in turbofan engine were investigated with the method of numerical simulation.The flow fields of exhaust systems were simulated with commercial software.The IR characteristics were calculated with an IR analysis software based on reverse Monte-carlo method developed by our research group.The IR characteristics in the waveband of 3-5μm of the two exhaust systems and the IR contributions of different solid parts in the nozzles in different detection directions were calculated and analyzed.In the process of IR computation,the emission and reflection of the wall in the nozzle and the absorption and emission of CO2,H2O and CO in the gas jet were considered.The results show that the spatial distribution characteristics of IR of the two exhaust systems are different.The integral IR intensity of the mixing exhaust nozzle is less than that of the individual one except in the azimuth angles of 0° to 10°.

     

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