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The compound-choking theory as an explanation of the entrainment limitation in supersonic ejectors

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  • Lamberts, Olivier
  • Chatelain, Philippe
  • Bourgeois, Nicolas
  • Bartosiewicz, Yann

Abstract

While the limitation of the entrainment ratio in supersonic ejectors is a well-known phenomenon, there is still a need to gain insight on the choking phenomena at play in on-design operation. In state-of-the-art simplified models of supersonic ejectors, the secondary stream is assumed to reach sonic velocity in a hypothetical throat (Fabri-choking). However, an alternative explanation of the entrainment limitation known as the compound-choking theory states that a nozzle flow with two streams at different stagnation pressures may be choked with a subsonic stream if the other one is supersonic. In this paper, the compound-choking is highlighted in a supersonic ejector through a thorough analysis of numerical simulations validated against experimental data. In addition, comprehensive experimental data of supersonic ejectors are used to assess the performance of the compound-choking theory to predict the entrainment ratio in the on-design regime in various configurations. Most predictions are in the ±10% range when compared to the experimental data. Compared to state-of-the-art 1D models relying on the Fabri-choking assumption, the compound-choking theory is shown to generally perform better regarding the prediction of the on-design entrainment ratio. This study suggests that the compound-choking theory is well suited to model the choking process in supersonic ejectors.

Suggested Citation

  • Lamberts, Olivier & Chatelain, Philippe & Bourgeois, Nicolas & Bartosiewicz, Yann, 2018. "The compound-choking theory as an explanation of the entrainment limitation in supersonic ejectors," Energy, Elsevier, vol. 158(C), pages 524-536.
    • Handle: RePEc:eee:energy:v:158:y:2018:i:c:p:524-536
    DOI: 10.1016/j.energy.2018.06.036
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    References listed on IDEAS

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    1. Chunnanond, Kanjanapon & Aphornratana, Satha, 2004. "Ejectors: applications in refrigeration technology," Renewable and Sustainable Energy Reviews, Elsevier, vol. 8(2), pages 129-155, April.
    2. Besagni, Giorgio & Mereu, Riccardo & Inzoli, Fabio, 2016. "Ejector refrigeration: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 373-407.
    3. Ji, MyoungKuk & Utomo, Tony & Woo, JuSik & Lee, YongHun & Jeong, HyoMin & Chung, HanShik, 2010. "CFD investigation on the flow structure inside thermo vapor compressor," Energy, Elsevier, vol. 35(6), pages 2694-2702.
    4. Chen, Weixiong & Shi, Chaoyin & Zhang, Shuangping & Chen, Huiqiang & Chong, Daotong & Yan, Junjie, 2017. "Theoretical analysis of ejector refrigeration system performance under overall modes," Applied Energy, Elsevier, vol. 185(P2), pages 2074-2084.
    5. He, S. & Li, Y. & Wang, R.Z., 2009. "Progress of mathematical modeling on ejectors," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(8), pages 1760-1780, October.
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    Cited by:

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    3. Schillaci, Eugenio & Vera, Jordi & Oliet, Carles & Vemula, Jagadish Babu & Duponcheel, Matthieu & Bartosiewicz, Yann, 2024. "Numerical modeling of air ejectors covering supersonic, subsonic and closed-port operations," Energy, Elsevier, vol. 302(C).
    4. Sui, Yang & Niu, Jiqiang & Yu, Qiujun & Yuan, Yanping & Cao, Xiaoling & Yang, Xiaofeng, 2021. "Numerical analysis of the aerothermodynamic behavior of a Hyperloop in choked flow," Energy, Elsevier, vol. 237(C).
    5. Metsue, Antoine & Debroeyer, Romain & Poncet, Sébastien & Bartosiewicz, Yann, 2022. "An improved thermodynamic model for supersonic real-gas ejectors using the compound-choking theory," Energy, Elsevier, vol. 238(PB).
    6. Besagni, Giorgio, 2019. "Ejectors on the cutting edge: The past, the present and the perspective," Energy, Elsevier, vol. 170(C), pages 998-1003.
    7. Croquer, Sergio & Fang, Yu & Metsue, Antoine & Bartosiewicz, Yann & Poncet, Sébastien, 2021. "Compound-choking theory for supersonic ejectors working with real gas," Energy, Elsevier, vol. 227(C).
    8. Van den Berghe, Jan & Dias, Bruno R.B. & Bartosiewicz, Yann & Mendez, Miguel A., 2023. "A 1D model for the unsteady gas dynamics of ejectors," Energy, Elsevier, vol. 267(C).
    9. Ll Macia & R. Castilla & P. J. Gamez-Montero & S. Camacho & E. Codina, 2019. "Numerical Simulation of a Supersonic Ejector for Vacuum Generation with Explicit and Implicit Solver in Openfoam," Energies, MDPI, vol. 12(18), pages 1-17, September.
    10. Zhou, Yifan & Chen, Guangming & Hao, Xinyue & Gao, Neng & Volovyk, Oleksii, 2023. "Working mechanism and characteristics analysis of a novel configuration of a supersonic ejector," Energy, Elsevier, vol. 278(PB).

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