Volume 37 Issue 4
Apr.  2011
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Zhu Xijuan, Eriqitai Li, Jiajun Wangqiang, et al. Effect of micro-jets mixing enhancement on infrared radiation of plume[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(4): 483-486. (in Chinese)
Citation: Zhu Xijuan, Eriqitai Li, Jiajun Wangqiang, et al. Effect of micro-jets mixing enhancement on infrared radiation of plume[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(4): 483-486. (in Chinese)

Effect of micro-jets mixing enhancement on infrared radiation of plume

  • Received Date: 22 Jun 2010
  • Publish Date: 30 Apr 2011
  • The infrared radiation in 3~5μm band of the unforced plume and the forced plume which is mixed by injecting micro-jets into subsonic shear layer were calculated by a three-dimensional infrared(IR) radiation code of the plume, it was developed by the finite volume method (FVM) in non-gray absorbing-emitting media. The 3-D flow field of the jet was simulated numerically by FVM, Tam-Thies turbulence model. The results show that small injection flow rates (less than 3%) can make sharp increases in both velocity and temperature decay rates at middle Mach number. Compared with the unforced plume, when the jet mass flow accounts for 1% of the main flow, the IR radiation intensity of the forced plume is reduced by about 15%; and when the jet mass flow occupy 3%,the IR radiation intensity of the forced plume is decreased by about 27%.

     

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