| SUN Hai-ou , YE Nan , WANG Ji-da , GONG Yu , WANG Zhong-yi.Effect of Tip Clearance on Axial Compressor Performance and Flow Field[J].航空发动机,2014,40(3):1-7 |
| Effect of Tip Clearance on Axial Compressor Performance and Flow Field |
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| Key Words:axial compressor tip clearance performance flow field numerical simulation aeroengine efficiency |
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| Abstract:Aiming at tip clearance caused by the erosion and mechanical damage on the compressor performance, the different uniform and non-uniform tip clearance of 1.5 stage compressors were numerically simulated by NUMECA software. The compressor aerodynamic performance on variable operations was simulated, and the flow characteristics curve were obtained by changing the back pressure and giving the different tip clearance values on uniform and non-uniform situation. The effect of different tip clearance on the internal flow field and flow characteristics was analyzed. The numerical results indicate that there appears the performance degradation of the compressor efficiency and pressure ratio when rotor tip clearance increases. The degradation under different tip clearance condition is different, which provides certain reference value to performance prediction under off-design conditions |
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