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Numerical Investigation of the Effect of Sudden Expansion Ratio of Solid Fuel Ramjet Combustor with Swirling Turbulent Reacting Flow

Author

Listed:
  • Weixuan Li

    (Nanjing University of Science and Technology, Nanjing 210094, China)

  • Xiong Chen

    (Nanjing University of Science and Technology, Nanjing 210094, China)

  • Wenxiang Cai

    (Nanjing University of Science and Technology, Nanjing 210094, China)

  • Omer Musa

    (Nanjing University of Science and Technology, Nanjing 210094, China)

Abstract

In this paper, the effect of sudden expansion ratio of solid fuel ramjet (SFRJ) combustor is numerically investigated with swirl flow. A computational fluid dynamics (CFD) code is written in FORTRAN to simulate the combustion and flow patterns in the combustion chamber. The connected-pipe facility is used to perform the experiment with swirl, and high-density Polyethylene (HDPE) is used as the solid fuel. The investigation is performed with different sudden expansion ratios, in which the port and inlet diameters are independently varied. The results indicated that the self-sustained combustion of the SFRJ occurs around the reattachment point at first, and then the heat released in reattachment point is used to achieve the self-sustained combustion in the redevelopment zone. The average regression rate is proportional to the sudden expansion ratio for the cases with a fixed port diameter, which is mainly dominated by the enhancement of heat transfer in backward-facing step. However, the average regression rate is inversely proportional to the sudden expansion ratio for the cases with fixed inlet diameter, which is influenced by the heat transfer mechanism of developed turbulent flow in the redevelopment zone.

Suggested Citation

  • Weixuan Li & Xiong Chen & Wenxiang Cai & Omer Musa, 2019. "Numerical Investigation of the Effect of Sudden Expansion Ratio of Solid Fuel Ramjet Combustor with Swirling Turbulent Reacting Flow," Energies, MDPI, vol. 12(9), pages 1-29, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:9:p:1784-:d:230101
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    References listed on IDEAS

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    1. Jing, Jianping & Li, Zhengqi & Zhu, Qunyi & Chen, Zhichao & Wang, Lin & Chen, Lizhe, 2011. "Influence of the outer secondary air vane angle on the gas/particle flow characteristics near the double swirl flow burner region," Energy, Elsevier, vol. 36(1), pages 258-267.
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    Cited by:

    1. Yan Wu & Wei-Tao Wu, 2021. "Modeling on Effect of Particle Sediment on Fluid Flow and Heat Transfer of Solid–Fluid Suspension," Energies, MDPI, vol. 14(2), pages 1-17, January.
    2. Omer Musa & Xiong Chen & Yingkun Li & Weixuan Li & Wenhe Liao, 2019. "Unsteady Simulation of Ignition of Turbulent Reactive Swirling Flow of Novel Design of Solid-Fuel Ramjet Motor," Energies, MDPI, vol. 12(13), pages 1-32, June.

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