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Design of 1 + 1 / 2 counter rotating centrifugal turbine and performance comparison with two-stage centrifugal turbine

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  • Luo, Dan
  • Sun, Xiaojing
  • Huang, Diangui

Abstract

The counter-rotating turbine technology is one of the potential technical measures to improve the performance of aero-engine. Inspired by axial-flow counter-rotating turbine, this paper applied the counter-rotating turbine technology to the centrifugal turbine and carried out the aerodynamic design of the 1 + 1/2 counter-rotating centrifugal turbine stage by theoretical analysis using the air ideal gas as the working fluid. Then the blade profile of 1 + 1/2 counter-rotating centrifugal turbine was designed based on the velocity triangle obtained from theoretical analysis. At last, 1 + 1/2 counter-rotating centrifugal turbine was numerically analyzed and compared with the two-stage co-rotating centrifugal turbine under the same thermal parameters. The results show that the 1 + 1/2 counter-rotating centrifugal turbine has 12.0% less maximum diameter and 1.57% higher efficiency than the two-stage co-rotating centrifugal turbine.

Suggested Citation

  • Luo, Dan & Sun, Xiaojing & Huang, Diangui, 2020. "Design of 1 + 1 / 2 counter rotating centrifugal turbine and performance comparison with two-stage centrifugal turbine," Energy, Elsevier, vol. 211(C).
    • Handle: RePEc:eee:energy:v:211:y:2020:i:c:s0360544220317369
    DOI: 10.1016/j.energy.2020.118628
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    Cited by:

    1. Tingsong Yan & Huanlong Chen & Zhiqian Wu & Yang Liu & Peigang Yan, 2023. "Research on Aerodynamic Design of an End Wall Based on a Quasi-3D Optimization Method," Energies, MDPI, vol. 16(4), pages 1-21, February.
    2. Tingsong Yan & Huanlong Chen & Jiwei Fang & Peigang Yan, 2022. "Research on 3D Design of High-Load Counter-Rotating Compressor Based on Aerodynamic Optimization and CFD Coupling Method," Energies, MDPI, vol. 15(13), pages 1-18, June.

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