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Using extruded circular multi-injectors to improve fuel jet mixing and distribution in combustion chambers of scramjet

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  • Huang, Dian

Abstract

An extensive investigation of multi-nozzle with various heights is done for enhancing the fuel mixing and distribution in supersonic combustion chambers of scramjets by using Computational Fluid Dynamics. Fuel injection and mixing play a crucial role in many industries, including automotive. This study examines the mechanism of hydrogen fuel jet mixing when injected through a multi-nozzle with varying heights in the combustion chamber of a scramjet. The impact of different injector height configurations on supersonic cross-flow is analyzed through computational fluid dynamics, and the flow and fuel mixing are evaluated to determine the most efficient fuel injection setup. A comparison is made between the proposed multi-jet configurations and simple multijet configurations to identify the primary hydrodynamic and mixing benefits of multi-jet configuration with different heights. The findings indicate that the use of multi-jet injectors with different heights decreases the circulation factor and improves fuel mixing downstream of four jets by 40 %.

Suggested Citation

  • Huang, Dian, 2024. "Using extruded circular multi-injectors to improve fuel jet mixing and distribution in combustion chambers of scramjet," Energy, Elsevier, vol. 288(C).
    • Handle: RePEc:eee:energy:v:288:y:2024:i:c:s0360544223030906
    DOI: 10.1016/j.energy.2023.129696
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    References listed on IDEAS

    as
    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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    3. 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).
    4. Hai, Tao & Hussein Kadir, Dler & Ghanbari, Afshin, 2023. "Modeling the emission characteristics of the hydrogen-enriched natural gas engines by multi-output least-squares support vector regression: Comprehensive statistical and operating analyses," Energy, Elsevier, vol. 276(C).
    5. Wu, Yue & Liu, Long & Liu, Bo & Cao, Erming & Xiong, Qian, 2023. "Investigation of rapid flame front controlled knock combustion and its suppression in natural gas dual-fuel marine engine," Energy, Elsevier, vol. 279(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.
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