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Study on the behavior of liquid films with different viscosities after impact by single droplet

  • Jun Peng
    ,
  • Lili Lu
    ,
  • Yiqiang Pei
    ,
  • Jing Qin
    ,
  • Yuqian Wang
    ,
  • Qingyang Zhu
Research Output:
Chapter in Book/Report/Conference proceeding
Conference contribution
 Peer-review

Open access

Abstract

Research on single drop impact, especially in the past two decades, has been motivated by a need for better predictive capability in many industries. The objective of this work is to clarify the single droplet impingement behavior onto a liquid film with different physical properties. Fluorescent agent is added to the liquid film, and the experimental method of Laser induced fluorescence(LIF) is used to distinguish the liquid film from the incident liquid droplet. Within the experimental ranges tested, the liquid film can be divided into five types after the droplet impacts, and the instability mechanism responsible for the crown and splash formation was analyzed. New results on crownsplash thresholds are obtained on the basis of the Weber number of incident droplet (We) and the Ohnesorge number of the liquid film (Oh*). Moreover, this article also explores the maximum height of the liquid film crown after the impact of the droplet and the crown diameter at the corresponding moment. They were analyzed by combining We with Oh*, and experimental results allow to propose empirical correlations which can be used for prediction of crown parameters.

Publication Information

Output type

Research Output:
Chapter in Book/Report/Conference proceeding
Conference contribution
 Peer-review

Original language

English

Publication milestones

  • Published - 09/03/2020

Publication status

Published - 09/03/2020

Publisher

Routledge, United States, United Kingdom

ISBN (Print)

9780367903565

Publication IDs

  • handle.net: 10547/626797

Host publication title

Internal Combustion Engines and Powertrain Systems for Future Transport 2019: Proceedings of the International Conference on Internal Combustion Engines and Powertrain Systems for Future Transport, (ICEPSFT 2019), December 11-12, 2019, Birmingham, UK

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