Volume 22 Issue 8
Aug.  2007
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WANG Suo-fang, ZHU Qiang-hua, LUAN Hai-feng, ZHANG Yu. Experimental study on heat transfer in rotor-stator cavity with high-positioned pre-swirl inflow[J]. Journal of Aerospace Power, 2007, 22(8): 1216-1221.
Citation: WANG Suo-fang, ZHU Qiang-hua, LUAN Hai-feng, ZHANG Yu. Experimental study on heat transfer in rotor-stator cavity with high-positioned pre-swirl inflow[J]. Journal of Aerospace Power, 2007, 22(8): 1216-1221.

Experimental study on heat transfer in rotor-stator cavity with high-positioned pre-swirl inflow

  • Received Date: 2006-07-10
  • Rev Recd Date: 2007-01-30
  • Publish Date: 2007-08-28
  • A turbine disc-cavity cooling configuration of an aero-engine was simplified to a rotor-stator cavity model with high-positioned pre-swirl nozzle.The influences of rotor-stator gap, cooling air flux, rotational Reynolds number and swirl ratio on the drop of cooling air temperature and heat transfer on the rotor were experimentally investigated by using advanced temperature measurement technology of the thermochromic liquid crystal.The experimental results indicate that, the high-positioned pre-swirling inflow yields outstanding cooling effect on the rotor fringe, and the temperature of the rotor is distributed in the shape of concentric circle;the drop of cooling air temperature diminishes with the increase of rotational Reynolds number and rotor-stator gap, or with the decrease of cooling air flux, meanwhile, the cooling effect on the rotor becomes worse.

     

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