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Collisions of Liquid Droplets in a Gaseous Medium under Conditions of Intense Phase Transformations: Review

Author

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  • Svetlana Kropotova

    (Scientific and Educational Department of I.N. Butakova, Power Engineering School, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia)

  • Pavel Strizhak

    (Scientific and Educational Department of I.N. Butakova, Power Engineering School, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia)

Abstract

The article presents the results of theoretical and experimental studies of coalescence, disruption, and fragmentation of liquid droplets in multiphase and multicomponent gas-vapor-droplet media. Highly promising approaches are considered to studying the interaction of liquid droplets in gaseous media with different compositions and parameters. A comparative analysis of promising technologies is carried out for the primary and secondary atomization of liquid droplets using schemes of their collision with each other. The influence of a range of factors and parameters on the collision processes of drops is analyzed, in particular, viscosity, density, surface, and interfacial tension of a liquid, trajectories of droplets in a gaseous medium, droplet velocities and sizes. The processes involved in the interaction of dissimilar droplets with a variable component composition and temperature are described. Fundamental differences are shown in the number and size of droplets formed due to binary collisions and collisions between droplets and particles at different Weber numbers. The conditions are analyzed for the several-fold increase in the number of droplets in the air flow due to their collisions in the disruption mode. A technique is described for generalizing and presenting the research findings on the interaction of drops in the form of theoretical collision regime maps using various approaches.

Suggested Citation

  • Svetlana Kropotova & Pavel Strizhak, 2021. "Collisions of Liquid Droplets in a Gaseous Medium under Conditions of Intense Phase Transformations: Review," Energies, MDPI, vol. 14(19), pages 1-27, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:19:p:6150-:d:644097
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    References listed on IDEAS

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    1. Jonghan Won & Seung Wook Baek & Hyemin Kim & Hookyung Lee, 2019. "The Viscosity and Combustion Characteristics of Single-Droplet Water-Diesel Emulsion," Energies, MDPI, vol. 12(10), pages 1-12, May.
    2. Jin-Peng Guo & Yi-Bo Wang & Fu-Qiang Bai & Fan Zhang & Qing Du, 2018. "Effects of Asymmetric Gas Distribution on the Instability of a Plane Power-Law Liquid Jet," Energies, MDPI, vol. 11(7), pages 1-14, July.
    3. Ivan Pavlenko & Vsevolod Sklabinskyi & Michał Doligalski & Marek Ochowiak & Marcin Mrugalski & Oleksandr Liaposhchenko & Maksym Skydanenko & Vitalii Ivanov & Sylwia Włodarczak & Szymon Woziwodzki & Iz, 2020. "The Mathematical Model for the Secondary Breakup of Dropping Liquid," Energies, MDPI, vol. 13(22), pages 1-17, November.
    4. Zejun Liu & Jianjun Wu & He Zhen & Xiaoping Hu, 2013. "Numerical Simulation on Head-On Binary Collision of Gel Propellant Droplets," Energies, MDPI, vol. 6(1), pages 1-16, January.
    5. Doston Shayunusov & Dmitry Eskin & Boris V. Balakin & Svyatoslav Chugunov & Stein Tore Johansen & Iskander Akhatov, 2021. "Modeling Water Droplet Freezing and Collision with a Solid Surface," Energies, MDPI, vol. 14(4), pages 1-11, February.
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    Cited by:

    1. Jiaqing Chang & Rongchang Xu & Jinsheng Cui & Qiaolin Song & Teng Shen, 2022. "Influences of Liquid Viscosity and Relative Velocity on the Head-On Collisions of Immiscible Drops," Energies, MDPI, vol. 15(22), pages 1-18, November.

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