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The role of annular 2-lobe nozzle in a strut injection system on the mechanism of fuel distribution at a scramjet engine

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  • Wei, Dechen
  • Jiao, Yuanyuan
  • Zhang, Ning
  • Gao, Hongyang
  • Yu, Hao

Abstract

The strut injection system is a conventional technique for the injection of the fuel in combustor in hypersonic vehicles. The present article investigates the usage of the annular 2-lobe injector to improve the fuel jet behind the strut. Computational studies have been employed for the modeling of fuel jets released from 2-lobe injectors at the supersonic free stream of the combustion chamber. Simulation of the compressible flow is done by solving Reynolds-Averaged Navier-Stokes (RANS) equations with the turbulence model of SST. The roles of the proposed injection configuration on the flow and fuel jet penetration are disclosed in this work. The shape of fuel jet plume behind the injector is also investigated to explain the mechanism of fuel jet distribution in this technique. Presented data disclosed that the usage of the annular 2-lobe nozzle instead of a single circular jet improves fuel mixing by about 50 % behind the strut model.

Suggested Citation

  • Wei, Dechen & Jiao, Yuanyuan & Zhang, Ning & Gao, Hongyang & Yu, Hao, 2024. "The role of annular 2-lobe nozzle in a strut injection system on the mechanism of fuel distribution at a scramjet engine," Energy, Elsevier, vol. 301(C).
    • Handle: RePEc:eee:energy:v:301:y:2024:i:c:s036054422401452x
    DOI: 10.1016/j.energy.2024.131679
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    References listed on IDEAS

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    1. Ma, Lianghua & Liu, Xiaoliang & Liu, Haoyang & Alizadeh, As'ad & Shamsborhan, Mahmoud, 2023. "The influence of the struts on mass diffusion system of lateral hydrogen micro jet in combustor of scramjet engine: Numerical study," Energy, Elsevier, vol. 279(C).
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    5. Li, Yaohui & Zhu, Guanghui & Chao, Yanpu & Chen, Liangbin & Alizadeh, As'ad, 2023. "Comparison of the different shapes of extruded annular nozzle on the fuel mixing of the hydrogen jet at supersonic combustion chamber," Energy, Elsevier, vol. 281(C).
    6. F. Pish & Tran Dinh Manh & M. Barzegar Gerdroodbary & Nguyen Dang Nam & Rasoul Moradi & Houman Babazadeh, 2020. "Computational study of the cavity flow over sharp nose cone in supersonic flow," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 31(06), pages 1-12, June.
    7. Yan, Li & Liao, Lei & Meng, Yu-shan & Li, Shi-bin & Huang, Wei, 2020. "Investigation on the mode transition of a typical three-dimensional scramjet combustor equipped with a strut," Energy, Elsevier, vol. 208(C).
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