Journal of Dalian Maritime University >
2016 , Vol. 42 >Issue 2: 83 - 90
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2016.02.014
Influences of curved rotor on the aerodynamics performance and vortex structure of transonic compressor rotor
Received date: 2016-01-11
Revised date: 2016-01-31
Online published: 2016-01-31
On the basis of validating the numerical reliability, the commercial software NUMECA was used to shape the transonic compressor rotor and three dimensional numerical simulation was carried out. Results show that the static pressure distribution on the wall surface and the structure of shock wave and vortex structure are changed as blade bending deformation. Under the premise of stable working range and total pressure ratio, the design of negative bending can improve efficiency and the promotion effects vary with bending height and angle, up to 1.3% as maximum. The design of positive bending make the rotor aerodynamic performance reduced, and become worse with higher bending height and angle. For negative bending design the tip shock wave moves backward and intensity becomes weak, the leakage flow and vortex is greatly reduced as the decrease of the differential pressure at the front of blade tip; on the contrary, for positive bending design as the shock wave moves forward and the intensity is enhanced, the tip leakage flow and vortex intensity is strengthened as the bigger differential pressure at the front of blade tip.
ZHONG Jing-jun , LIU Jun , HAN Shao-bing . Influences of curved rotor on the aerodynamics performance and vortex structure of transonic compressor rotor[J]. Journal of Dalian Maritime University, 2016 , 42(2) : 83 -90 . DOI: 10.16411/j.cnki.issn1006-7736.2016.02.014
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