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Effect of Particle Diameter on Primary Breakup of High-Pressure Diesel Spray Atomization: A Study Based on Numerical Simulations Using the Eulerian–Lagrangian Model

Author

Listed:
  • Yan Lei

    (Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China)

  • Xiaojie Liang

    (Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China)

  • Dingwu Zhou

    (Department of Automotive Application, Hunan Automotive Engineering Vocational College, Zhuzhou 412001, China)

  • Tao Qiu

    (Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China)

  • Kaixin Wang

    (Beijing Aerospace Technology Institute, Beijing 100176, China)

  • Yue Wu

    (Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China)

Abstract

The coupling of Eulerian and Lagrangian methods in the Eulerian–Lagrangian Spray Atomization (ELSA) approach is critical. This study proposes an equation for the primary breakup particle diameter D of a diesel fuel spray and adopts it as a key transition criterion for coupling. A three-dimensional diesel spray is modeled by the large-eddy simulation (LES) approach. This improved ELSA simulation was conducted using various transition criteria for particle diameter D cr . The results show that fuel spray experiences two stages: stage I, when a liquid column appears without a dispersed phase, and stage II, when primary breakup occurs with many discrete particles. Although D cr has little influence on the macro-spray characteristics, such as top penetration distance S and spray cone angle θ , it has significant effects on discrete particles, such as their number, average diameter, distribution and location, and spray cone area. D cr should be determined on the basis of actual operating conditions.

Suggested Citation

  • Yan Lei & Xiaojie Liang & Dingwu Zhou & Tao Qiu & Kaixin Wang & Yue Wu, 2022. "Effect of Particle Diameter on Primary Breakup of High-Pressure Diesel Spray Atomization: A Study Based on Numerical Simulations Using the Eulerian–Lagrangian Model," Energies, MDPI, vol. 16(1), pages 1-24, December.
    • Handle: RePEc:gam:jeners:v:16:y:2022:i:1:p:238-:d:1014877
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    References listed on IDEAS

    as
    1. Yan Lei & Yue Wu & Dingwu Zhou & Kaixin Wang & Tao Qiu & Yuwan Deng & Dan Zhou, 2022. "Investigation on Primary Breakup of High-Pressure Diesel Spray Atomization by Method of Automatic Identifying Droplet Feature Based on Eulerian–Lagrangian Model," Energies, MDPI, vol. 15(3), pages 1-18, January.
    2. Lei, Yan & Liu, Jiaxing & Qiu, Tao & Mi, Jianchun & Liu, Xianwu & Zhao, Ning & Peng, Guangyu, 2019. "Effect of injection dynamic behavior on fuel spray penetration of common-rail injector," Energy, Elsevier, vol. 188(C).
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