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A novel CFD approach for the computation of R744 flashing nozzles in compressible and metastable conditions

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  • Giacomelli, Francesco
  • Mazzelli, Federico
  • Milazzo, Adriano

Abstract

The present paper describes a novel CFD approach for the flashing of CO2 through nozzles and ejectors. The novelty of the method is represented by the possibility of defining both the liquid and vapor phases as compressible materials. The properties of each phase are obtained via look-up tables calibrated against standard fluid libraries and are valid in the whole domain of interest, including the supercritical, subcritical and metastable regions.

Suggested Citation

  • Giacomelli, Francesco & Mazzelli, Federico & Milazzo, Adriano, 2018. "A novel CFD approach for the computation of R744 flashing nozzles in compressible and metastable conditions," Energy, Elsevier, vol. 162(C), pages 1092-1105.
    • Handle: RePEc:eee:energy:v:162:y:2018:i:c:p:1092-1105
    DOI: 10.1016/j.energy.2018.08.050
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    References listed on IDEAS

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    1. Yixiang Liao & Dirk Lucas, 2017. "Possibilities and Limitations of CFD Simulation for Flashing Flow Scenarios in Nuclear Applications," Energies, MDPI, vol. 10(1), pages 1-22, January.
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    Cited by:

    1. Lixing Zheng & Yiyan Zhang & Lifen Hao & Haojie Lian & Jianqiang Deng & Wei Lu, 2022. "Modelling, Optimization, and Experimental Studies of Refrigeration CO 2 Ejectors: A Review," Mathematics, MDPI, vol. 10(22), pages 1-23, November.
    2. Wu, Shiguang & Zhao, Bangjian & Tan, Jun & Zhao, Yongjiang & Zhai, Yujia & Xue, Renjun & Tan, Han & Ma, Dong & Wu, Dirui & Dang, Haizheng, 2023. "Thermodynamic study on throttling process of Joule-Thomson cooler to improve helium liquefaction performance between 2 K and 4 K," Energy, Elsevier, vol. 277(C).
    3. Knut Emil Ringstad & Krzysztof Banasiak & Åsmund Ervik & Armin Hafner, 2022. "Swirl-Bypass Nozzle for CO 2 Two-Phase Ejectors: Numerical Design Exploration," Energies, MDPI, vol. 15(18), pages 1-30, September.
    4. Li, Yafei & Deng, Jianqiang, 2022. "Numerical investigation on the performance of transcritical CO2 two-phase ejector with a novel non-equilibrium CFD model," Energy, Elsevier, vol. 238(PC).
    5. Besagni, Giorgio, 2019. "Ejectors on the cutting edge: The past, the present and the perspective," Energy, Elsevier, vol. 170(C), pages 998-1003.
    6. Golrokh Sani, Ahmad & Najafi, Hamidreza & Azimi, Seyedeh Shakiba, 2022. "Dynamic thermal modeling of the refrigerated liquified CO2 tanker in carbon capture, utilization, and storage chain: A truck transport case study," Applied Energy, Elsevier, vol. 326(C).

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    More about this item

    Keywords

    R744; Flashing nozzle; CFD; Look-up tables; Metastable properties;
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