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Understanding the collapse of flash-boiling sprays formed by multi-hole injectors operating at low injection pressures

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  • Kapusta, Łukasz Jan

Abstract

Sprays consisting of initially separated plumes, which are generated by multi-hole injectors in strong flash-boiling conditions, may collapse and form a single spray cloud. It has been shown that for high-pressure injection systems (≥5 MPa), such behaviour is dependent on both the superheat and the geometrical configuration of the injector; while the spray collapse in low-pressure systems (≤1 MPa) is not yet understood. To the best of the author's knowledge, this is the first study aimed at filling this information gap. The principal novelty of this work is related to understanding the collapse in low-pressure systems, in terms of the different numbers of nozzles and the difference in the effects from flash boiling between low- and high-pressure sprays.

Suggested Citation

  • Kapusta, Łukasz Jan, 2022. "Understanding the collapse of flash-boiling sprays formed by multi-hole injectors operating at low injection pressures," Energy, Elsevier, vol. 247(C).
    • Handle: RePEc:eee:energy:v:247:y:2022:i:c:s0360544222002912
    DOI: 10.1016/j.energy.2022.123388
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    References listed on IDEAS

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    1. Bi, Rongshan & Chen, Chen & Li, Jiansong & Tan, Xinshun & Xiang, Shuguang, 2018. "Research on the CFD numerical simulation of flash boiling atomization," Energy, Elsevier, vol. 165(PA), pages 768-781.
    2. Ju, Dehao & Huang, Zhong & Jia, Xiaoxu & Qiao, Xinqi & Xiao, Jin & Huang, Zhen, 2016. "Macroscopic characteristics and internal flow pattern of dimethyl ether flash-boiling spray discharged through a vertical twin-orifice injector," Energy, Elsevier, vol. 114(C), pages 1240-1250.
    3. Jiang, Changzhao & Parker, Matthew C. & Butcher, Daniel & Spencer, Adrian & Garner, Colin P. & Helie, Jerome, 2019. "Comparison of flash boiling resistance of two injector designs and the consequences on downsized gasoline engine emissions," Applied Energy, Elsevier, vol. 254(C).
    4. Kaario, Ossi Tapani & Vuorinen, Ville & Zhu, Lei & Larmi, Martti & Liu, Ronghou, 2017. "Mixing and evaporation analysis of a high-pressure SCR system using a hybrid LES-RANS approach," Energy, Elsevier, vol. 120(C), pages 827-841.
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    Citations

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    Cited by:

    1. Chang, Mengzhao & Kim, Huijun & Zhou, Bo & Park, Suhan, 2023. "Spray collapse resistance of GDI injectors with different hole structures under flash boiling conditions," Energy, Elsevier, vol. 268(C).
    2. Meng Ji & Zhijun Wu & Alessandro Ferrari & Lezhong Fu & Oscar Vento, 2023. "Experimental Investigation on Gasoline—Water Mixture Fuel Impingement Preparation Method and Spray Characteristics with High Injection Temperatures and Pressures," Energies, MDPI, vol. 16(16), pages 1-16, August.
    3. Zhou, Yifan & Wei, Zhenhong & Zhu, Qitian & Cao, Yang & Zhang, Yuyin, 2022. "Quantitative characterization on cyclic variation of mixture formation for flash boiling sprays," Energy, Elsevier, vol. 257(C).
    4. Qiu, Shuyi & Yao, Bowei & Wang, Shangning & Zhang, Weixuan & Hung, David L.S. & Xu, Min & Li, Xuesong, 2023. "Droplet characteristics of multi-plume flash boiling spray evaluation using SLIPI-LIEF/Mie planar imaging technique," Energy, Elsevier, vol. 282(C).
    5. Kaźmierski, Bartosz & Kapusta, Łukasz Jan, 2023. "The importance of individual spray properties in performance improvement of a urea-SCR system employing flash-boiling injection," Applied Energy, Elsevier, vol. 329(C).

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