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Feasible Concept of an Air-Driven Fan with a Tip Turbine for a High-Bypass Propulsion System

Author

Listed:
  • Guoping Huang

    (College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China)

  • Xin Xiang

    (College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China)

  • Chen Xia

    (College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China)

  • Weiyu Lu

    (College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China)

  • Lei Li

    (College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China)

Abstract

The reduction in specific fuel consumption (SFC) is crucial for small/mid-size cost-controllable aircraft, which is very conducive to reducing cost and carbon dioxide emissions. To decrease the SFC, increasing the bypass ratio (BPR) is an important way. Conventional high-BPR engines have several limitations, especially the conflicting spool-speed requirements of a fan and a low-pressure turbine. This research proposes an air-driven fan with a tip turbine (ADFTT) as a potential device for a high-bypass propulsion system. Moreover, a possible application of this ADFTT is introduced. Thermodynamic analysis results show that an ADFTT can improve thrust from a prototype turbofan. As a demonstration, we selected a typical small-thrust turbofan as the prototype and applied the ADFTT concept to improve this model. Three-dimensional flow fields were numerically simulated through a Reynolds averaged Navier-Stokes (RANS)-based computational fluid dynamics (CFD) method. The performance of this ADFTT has the possibility of amplifying the BPR more than four times and increasing the thrust by approximately 84% in comparison with the prototype turbofan.

Suggested Citation

  • Guoping Huang & Xin Xiang & Chen Xia & Weiyu Lu & Lei Li, 2018. "Feasible Concept of an Air-Driven Fan with a Tip Turbine for a High-Bypass Propulsion System," Energies, MDPI, vol. 11(12), pages 1-16, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:12:p:3350-:d:186801
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    Citations

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    Cited by:

    1. Weiyu Lu & Guoping Huang & Xin Xiang & Jinchun Wang & Yuxuan Yang, 2019. "Thermodynamic and Aerodynamic Analysis of an Air-Driven Fan System in Low-Cost High-Bypass-Ratio Turbofan Engine," Energies, MDPI, vol. 12(10), pages 1-17, May.
    2. Xin Xiang & Guoping Huang & Jie Chen & Lei Li & Weiyu Lu, 2019. "Numerical Investigations of a Tip Turbine Aerodynamic Design in a Propulsion System for VTOL Vehicles," Energies, MDPI, vol. 12(15), pages 1-16, August.

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