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Component malfunctions caused by corrosion or the penetration of fluids in electronic components, are responsible for a huge economic loss. This damage is often caused by minimal amounts of liquid that can enter components due to various effects, e.g. flow or vibration. Particularly due to the increasing complexity of components and the increased use of electronic components, the damage will increase significantly in the coming years if no targeted measures are taken. Despite the clear effects of water penetration, it is often unclear how this occurs. Due to complex flow conditions combined with superimposed vibrations and movements of the parts, it is difficult to predict the movement of droplets. In this paper, the basics of the movement of droplets under the influence of various forces are examined and the criteria for the onset of droplet movement are described in detail. Both numerical and experimental methods are presented.

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How Can the Understanding of Droplet Movement Contribute to the Safety in Mechanical Engineering?

  • 章节

  • 发表日期：

    2025年

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  • Sebastian Burgmann,
  • Martin Rohde,
  • Beawer Barwari,
  • Veronika Brox,
  • Uwe Janoske

摘要

Component malfunctions caused by corrosion or the penetration of fluids in electronic components, are responsible for a huge economic loss. This damage is often caused by minimal amounts of liquid that can enter components due to various effects, e.g. flow or vibration. Particularly due to the increasing complexity of components and the increased use of electronic components, the damage will increase significantly in the coming years if no targeted measures are taken. Despite the clear effects of water penetration, it is often unclear how this occurs. Due to complex flow conditions combined with superimposed vibrations and movements of the parts, it is difficult to predict the movement of droplets. In this paper, the basics of the movement of droplets under the influence of various forces are examined and the criteria for the onset of droplet movement are described in detail. Both numerical and experimental methods are presented.