Volume 23 Issue 2
Feb.  2008
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CHEN Jian-hua, LU Gang, ZHANG Gui-tian, ZHOU Li-xin, SUN Hong-ming. Investigation on the effects of injection structure on kerosene supercritical cooling film[J]. Journal of Aerospace Power, 2008, 23(2): 336-341.
Citation: CHEN Jian-hua, LU Gang, ZHANG Gui-tian, ZHOU Li-xin, SUN Hong-ming. Investigation on the effects of injection structure on kerosene supercritical cooling film[J]. Journal of Aerospace Power, 2008, 23(2): 336-341.
shu

Investigation on the effects of injection structure on kerosene supercritical cooling film

  • 1.

    School of Aerospace, North Western Polytechnical University, Xi'an 710072, China

  • 2.

    Xi'an Aerospace Propulsion Institute, Xi'an 710100, China

  • Received Date: 2007-08-20
  • Rev Recd Date: 2007-11-28
  • Publish Date: 2008-02-28
    Abstract
  • A kerosene supercritical film cooling model for the thrust chamber of liquid oxygen LOX/kerosene staged combustion cycle engine was established,and the effect of the film local injection structure on the local flow and cooling effect near the outlet of film cooling slot was analyzed.Under the supercritical condition, kerosene and its surrounding gas are in same phase,and can be described by the same equation for flow and heat transfer.Numerical simulations for 3 typical injection structures were carried out in this paper.The results show that: the step and angle of the film ring outlet and injection have great influence on the local flow and heat transfer,the step structure with outlet angle less than 90 degree will could reduce the local recirculation in favor of heat protection of the thrust chamber.

     

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