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Effects of Bypass Flow Distribution on Cold Flow Characteristics of Integrated Afterburner

Author

Listed:
  • Xiangzhong Jia

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

  • Yong Shan

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

  • Xingping Xu

    (Shenyang Engine Research Institute, Aero Engine Corporation of China, Shenyang 110015, China)

  • Jingzhou Zhang

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

  • Xiaoming Tan

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

Abstract

Integrated design is a trend in the development of afterburners, and the distribution of cold flow is directly related to their flow field characteristics, combustion organization, and the cooling effect of components. Numerical simulations were performed to illustrate the effects of bypass flow distribution on the flow distribution, mixing characteristics, and cooling efficiency of the components by varying the cooling flow path structure parameters. Within the range of parameters in this study, it can be indicated that with the increase of heat shield inlet height and afterburner annulus height, the total pressure recovery coefficient along the path increased accordingly, and the increasing rate at the afterburner outlet is 1.12% and 1.19%, respectively. The average cooling efficiency of radial flameholder, circumferential flameholder, and fuel injector all decrease, but the rate of decrease varies slightly depending on the location of the components. The increase of heat shield inlet height would reduce thermal mixing efficiency by approximately 5.4% at the afterburner outlet, and the increase of afterburner annular height would increase about 2.9%.

Suggested Citation

  • Xiangzhong Jia & Yong Shan & Xingping Xu & Jingzhou Zhang & Xiaoming Tan, 2021. "Effects of Bypass Flow Distribution on Cold Flow Characteristics of Integrated Afterburner," Energies, MDPI, vol. 14(18), pages 1-17, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:18:p:5842-:d:636155
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    References listed on IDEAS

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    1. Zhang, R.C. & Bai, N.J. & Fan, W.J. & Yan, W.H. & Hao, F. & Yin, C.M., 2018. "Flow field and combustion characteristics of integrated combustion mode using cavity with low flow resistance for gas turbine engines," Energy, Elsevier, vol. 165(PA), pages 979-996.
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