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Forced Combustion Characteristics Related to Different Injection Locations in Unheated Supersonic Flow

Author

Listed:
  • Chae-Hyoung Kim

    (Engine Test and Evaluation Team, Korea Aerospace Research Institute, Daejeon 34133, Korea)

  • In-Seuck Jeung

    (Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 08826, Korea)

Abstract

This work focuses on forced combustion with regards to the relationship between vent mixer models and several injection locations in unheated supersonic flow. A plasma jet torch was used to ignite the hydrogen-air mixture in a laboratory-scaled combustor duct. The flow field of the combustion was visualized with pressure and gas-sampling measurements. The vent mixers indicate good dispersion characteristics of the mixture for both parallel and normal 1 injections. However, forced combustion is dominantly governed by the injection rate toward the plasma jet (hot source) because the combustible region is restricted under the cold main flow. For this reason, the parallel injection, which provides the hydrogen-air mixture directly toward the plasma jet, shows good combustion performance. The normal 1 injection interacted with the vent mixers and shows slightly good combustion performance. Lastly, the normal 2 injection is little affected by the vent mixers and has poor combustion performance.

Suggested Citation

  • Chae-Hyoung Kim & In-Seuck Jeung, 2019. "Forced Combustion Characteristics Related to Different Injection Locations in Unheated Supersonic Flow," Energies, MDPI, vol. 12(9), pages 1-13, May.
  • Handle: RePEc:gam:jeners:v:12:y:2019:i:9:p:1746-:d:229314
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    Citations

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    Cited by:

    1. Byeong-Jo Hwang & Seongki Min, 2023. "Numerical Investigation of the Effect of Supersonic Air Temperature on the Mixing Characteristics of Liquid Fuel," Energies, MDPI, vol. 16(1), pages 1-17, January.
    2. 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.
    3. Naresh Relangi & Antonella Ingenito & Suppandipillai Jeyakumar, 2021. "The Implication of Injection Locations in an Axisymmetric Cavity-Based Scramjet Combustor," Energies, MDPI, vol. 14(9), pages 1-13, May.

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