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Study of effervescent jet breakup under gas expansion disturbance

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Abstract

Effervescent jet breakup-based gas expansion disturbance was studied by the combination of experiment and numerical methods. A transparent outside-in-type atomizer was used to observe both internal and external gas–liquid flow behavior. Effects of internal flow patterns and flow rates on gas expansion bulge were experimentally studied. Further analysis on the disturbance of gas expansion on jet breakup was conducted through the numerical method. The present work showed the results of gas expansion disturbance exiting under various internal flow regimes. Increasing gas–liquid flow rates enlarges spray angle and gas expansion bulge, decreases adjacent gas bulges’ distance, and leads to a more stable spray. Detailed numerical results demonstrated that the gas expansion advancing jet breakup was enhanced by enlarging instantaneous gas volume and internal pressure. For efficient utilization of gas expansion potential energy, small bubble formation is suggested.

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Funding

Project supported by the National Natural Science Foundation of China (Grant Nos. 51776016, 51606006,91741122), Beijing Natural Science Foundation (Grant Nos. 3172025, 3182030), and the National Engineering Laboratory for Mobile Source Emission Control Technology (Grant No. NELMS2017A10).

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Beijing Jiaotong University, Beijing, 100044, China

    Chunhua Sun, Zhi Ning, Ming Lv, Juan Fu, Jin Zhao & Xintao Wang

  2. Key Laboratory of Power Machinery and Engineering, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200240, China

    Chunhua Sun & Xinqi Qiao

Authors
  1. Chunhua Sun
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  2. Zhi Ning
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  3. Xinqi Qiao
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  4. Ming Lv
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  5. Juan Fu
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  6. Jin Zhao
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  7. Xintao Wang
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Corresponding authors

Correspondence to Zhi Ning or Xinqi Qiao.

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Sun, C., Ning, Z., Qiao, X. et al. Study of effervescent jet breakup under gas expansion disturbance. J Vis 21, 935–948 (2018). https://doi.org/10.1007/s12650-018-0502-6

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  • DOI: https://doi.org/10.1007/s12650-018-0502-6

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