Volume 29 Issue 7
Jul.  2014
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ZHANG Zhi-bo, ZHENG Hong-tao, LING Rui. Feature-parameter-criterion for predicting lean blowout limit of aero-engine combustor[J]. Journal of Aerospace Power, 2014, (7): 1631-1638. doi: 10.13224/j.cnki.jasp.2014.07.016
Citation: ZHANG Zhi-bo, ZHENG Hong-tao, LING Rui. Feature-parameter-criterion for predicting lean blowout limit of aero-engine combustor[J]. Journal of Aerospace Power, 2014, (7): 1631-1638. doi: 10.13224/j.cnki.jasp.2014.07.016

Feature-parameter-criterion for predicting lean blowout limit of aero-engine combustor

doi: 10.13224/j.cnki.jasp.2014.07.016
  • Received Date: 2013-04-07
  • Publish Date: 2014-07-28
  • Core principle and forecasting process of feature-parameter-criterion (FPC) were expounded firstly. A CFD software FLUENT was used to simulate the process of lean blowout (LBO) of an aero-engine annular combustor. "M" flame was proposed as the portent of blowout and its cause was given. The effects of velocity and temperature of inlet air on the LBO limit of aero-engine combustor were discussed by use of FPC. The results show that lean blowout fuel air ratio decreases with the increase of velocity of inlet air. When temperature of inlet air is less than 395 K, lean blowout fuel air ratio decreases with the increase of temperature of inlet air. And when temperature of inlet air is more than 395 K, lean blowout fuel air ratio remains unchanged.

     

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