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Aerodynamics of swept and leaned transonic compressor-rotors

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  • Benini, Ernesto
  • Biollo, Roberto

Abstract

A systematic investigation to understand the impact of axially swept and tangentially leaned blades on the aerodynamic behaviour of transonic axial-flow compressor rotors was undertaken. Effects of axial and tangential blade curvature were analyzed separately. A commercial CFD package, which solves the Reynolds-averaged Navier-Stokes equations, was used to compute the complex flow field of transonic compressor-rotors. It was validated against NASA Rotor 37 existing experimental data. Computed performance maps and downstream profiles showed a good agreement with measured ones. Furthermore, comparisons with experimental data indicated that the overall features of three-dimensional shock structure, shock-boundary layer interaction, and wake development are calculated well by the numerical solution. Next, quite a large number of new transonic swept rotors (26) were modelled from the original Rotor 37, by changing the meridional curvature of the original stacking line through three previously defined control points (located at 33%, 67% and 100% of span). Similarly, 26 new transonic leaned rotors were modelled by changing the circumferential position of the same control points. All the new transonic rotors were simulated and the results revealed many interesting aspects which are believed to be very helpful to better understand the blade curvature effects on shock structure and secondary losses within a transonic rotor.

Suggested Citation

  • Benini, Ernesto & Biollo, Roberto, 2007. "Aerodynamics of swept and leaned transonic compressor-rotors," Applied Energy, Elsevier, vol. 84(10), pages 1012-1027, October.
    • Handle: RePEc:eee:appene:v:84:y:2007:i:10:p:1012-1027
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    Cited by:

    1. Sun, Shijun & Wang, Songtao & Chen, Shaowen, 2020. "The influence of diversified forward sweep heights on operating range and performance of an ultra-high-load low-reaction transonic compressor rotor," Energy, Elsevier, vol. 194(C).
    2. Lu, Hanan & Li, Qiushi & Pan, Tianyu, 2016. "Optimization of cantilevered stators in an industrial multistage compressor to improve efficiency," Energy, Elsevier, vol. 106(C), pages 590-601.
    3. Li, Zhihui & Liu, Yanming, 2017. "Blade-end treatment for axial compressors based on optimization method," Energy, Elsevier, vol. 126(C), pages 217-230.
    4. Li, Qubo & Piechna, Janusz & Müller, Norbert, 2011. "Design of a novel axial impeller as a part of counter-rotating axial compressor to compress water vapor as refrigerant," Applied Energy, Elsevier, vol. 88(9), pages 3156-3168.
    5. Ruoyu Wang & Xianjun Yu & Baojie Liu & Guangfeng An, 2022. "Effects of Loading Level on the Variation of Flow Losses in Subsonic Axial Compressors," Energies, MDPI, vol. 15(17), pages 1-21, August.
    6. Li, Qubo & Piechna, Janusz & Müller, Norbert, 2011. "Numerical simulation of novel axial impeller patterns to compress water vapor as refrigerant," Energy, Elsevier, vol. 36(5), pages 2773-2781.

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