Volume 36 Issue 11
Nov.  2010
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Li Guoqing, Deng Hongwu, Xiao Junet al. Film cooling characteristics on pressure side of rotating turbine blade[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(11): 1286-1289. (in Chinese)
Citation: Li Guoqing, Deng Hongwu, Xiao Junet al. Film cooling characteristics on pressure side of rotating turbine blade[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(11): 1286-1289. (in Chinese)

Film cooling characteristics on pressure side of rotating turbine blade

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  • Corresponding author: Li Guoqing
  • Received Date: 23 Oct 2009
  • Publish Date: 30 Nov 2010
  • Experimental investigations were carried on to indicate the rotating film cooling characteristics in a 1.5 turbine stage. The length of the tested blade in chordwise and spanwise was 124.3mm and 99mm respectively with a 4mm film hole in the middle span oriented 28° to the tangential of the pressure side in streamwise. The mainflow Reynolds number Reg was 8×104. The blowing ratio varied from 0.3 to 3.0. Three rotating number (Rt) of 2.092, 2.324 and 2.448 were focused on. Air and CO2 worked as coolant to achieve the coolant to mainflow density ratio of 1.03 and 1.57 respectively. Thermo liquid crystal was employed to show the temperature distribution on pressure side surface which was captured by CCD. Results show that the film cooling effectiveness is increased with the blowing ratio rising while it is decreased with the Rt rising. Meanwhile, increasing Rt could lead the film trajectory to deflect more centrifugally. But it deflect less centrifugally with the blowing ratio rising under the same Rt. High density ratio could improve the film cooling effectiveness dramatically.

     

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  • [1] Goldstein R J.Film cooling[M].New York and London:Advance in Heat Transfer Academic Press,1971,7:321-380 [2] Dring R P,Blair M F,Joslyn H D.An experimental investigation of film cooling on a turbine rotor blade[J].ASME Journal of Engineering for Power,1980,102:81-87 [3] Takeishi K,Aoki S,Sato T,et al.Film cooling on a gas turbine rotor blade[J].Journal of Turbinemachinery,1992,114:828-834 [4] Abhari R S,Epstein A H.An experimental study of film cooling in a rotating transonic turbine[J].Journal of Turbinemachinery,1994,116:63-70 [5] Ahn J,Schobeiri M T,Han J Q,et al.Film cooling effectiveness on the leading edge region of a rotating turbine blade with two rows of film cooling holes using pressure sensitive paint[J].Journal of Heat Transfer,2006,128:879-888 [6] Yang H T,Chen H C,Han J Q,et al.Numerical study of film cooled rotor leading edge with tip clearance in 1-1/2 turbine stage[J].International Journal of Heat and Mass Transfer,2008,51:3066-3081 [7] Garg V K.Adiabatic effectiveness and heat transfer coefficient on a filmcooled rotating blade[J].Numerical Heat Transfer,1997,32(8):811-830 [8] 李国庆,邓宏武,侠晖霞.旋转状态下复合角对气膜冷却效果的影响[J].航空动力学报,2010,25(2):308-313 Li Guoqing,Deng Hongwu,Xia Huixia.Numerical investigation on film cooling effectiveness of rotating blade with multihole[J].Journal of Aerospace Power,2010,25(2):308-313(in Chinese) [9] Li Guoqing,Deng Hongwu,Xiao Jun.Film cooling effectiveness on a rotating turbine[C]//Asian Joint Conference on Propulsion and Power,Miyazaki.Japan:The 50th JSASS Conference on Aerospace Propulsion and Power,2010
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