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Numerical Study on the Solid Fuel Rocket Scramjet Combustor with Cavity

Author

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  • Chaolong Li

    (Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China)

  • Zhixun Xia

    (Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China)

  • Likun Ma

    (Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China)

  • Xiang Zhao

    (Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China)

  • Binbin Chen

    (Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China)

Abstract

Scramjet based on solid propellant is a good supplement for the power device of future hypersonic vehicles. A new scramjet combustor configuration using solid fuel, namely, the solid fuel rocket scramjet (SFRSCRJ) combustor is proposed. The numerical study was conducted to simulate a flight environment of Mach 6 at a 25 km altitude. Three-dimensional Reynolds-averaged Navier–Stokes equations coupled with shear stress transport (SST) k − ω turbulence model are used to analyze the effects of the cavity and its position on the combustor. The feasibility of the SFRSCRJ combustor with cavity is demonstrated based on the validation of the numerical method. Results show that the scramjet combustor configuration with a backward-facing step can resist high pressure generated by the combustion in the supersonic combustor. The total combustion efficiency of the SFRSCRJ combustor mainly depends on the combustion of particles in the fuel-rich gas. A proper combustion organization can promote particle combustion and improve the total combustion efficiency. Among the four configurations considered, the combustion efficiency of the mid-cavity configuration is the highest, up to about 70%. Therefore, the cavity can effectively increase the combustion efficiency of the SFRSCRJ combustor.

Suggested Citation

  • Chaolong Li & Zhixun Xia & Likun Ma & Xiang Zhao & Binbin Chen, 2019. "Numerical Study on the Solid Fuel Rocket Scramjet Combustor with Cavity," Energies, MDPI, vol. 12(7), pages 1-17, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:7:p:1235-:d:218727
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    References listed on IDEAS

    as
    1. Devendra Sen & Apostolos Pesyridis & Andrew Lenton, 2018. "A Scramjet Compression System for Hypersonic Air Transportation Vehicle Combined Cycle Engines," Energies, MDPI, vol. 11(6), pages 1-32, June.
    2. Sergey B. Leonov, 2018. "Electrically Driven Supersonic Combustion," Energies, MDPI, vol. 11(7), pages 1-35, July.
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    Cited by:

    1. Fan Li & Mingbo Sun & Zun Cai & Yong Chen & Yongchao Sun & Fei Li & Jiajian Zhu, 2020. "Effects of Additional Cavity Floor Injection on the Ignition and Combustion Processes in a Mach 2 Supersonic Flow," Energies, MDPI, vol. 13(18), pages 1-17, September.
    2. Primož Jozič & Aleksander Zidanšek & Robert Repnik, 2020. "Fuel Conservation for Launch Vehicles: Falcon Heavy Case Study," Energies, MDPI, vol. 13(3), pages 1-10, February.
    3. Pengnian Yang & Zhixun Xia & Likun Ma & Binbin Chen & Yunchao Feng & Chaolong Li & Libei Zhao, 2021. "Direct-Connect Test of Solid Scramjet with Symmetrical Structure," Energies, MDPI, vol. 14(17), pages 1-16, September.

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