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Heat Transfer and Solidification During the Impact of a Droplet on a Surface

  • D. Poulikakos
  • D. Attinger
  • S. Haferl
  • Z. Zhao
Conference paper
Part of the CISM International Centre for Mechanical Sciences book series (CISM, volume 456)

Abstract

The fundamental problem of a liquid droplet impacting on a surface appears in a plethora of phenomena from nature to technology. It offers a multiplicity of scientific challenges that cover the entire area of transport phenomena. In fluid dynamics it is a problem involving a severely deforming free liquid surface interacting with a gaseous environment on the one hand, and with a solid surface on the other. Complex wetting, breakup and recalescence phenomena may take place. The thermodynamic/heat transfer complexities can be exemplified if one considers the case where the impacting droplet is molten and it solidifies upon impact. In addition to the interplay of the three heat transfer modes and thermocapillarity, the solidification may occur under non-equilibrium conditions. Adsorption and surfactant presence (oxides, for example,) can give rise to a dynamic behavior of the surface tension during the droplet deformation. The purpose of this chapter is to review the state of the art of the above discussed droplet/surface impact problem as it pertains to the deposition droplets in the presence of temperature gradients with or without simultaneous solidification. In the case of the former the focus will be on the deposition of molten materials with the additional goal to identify trends of future research driven by emerging technologies. Following the trend of published work, the review focuses primarily but not exclusively on metal microdroplet solidification. Phenomena at the microscopic and submicroscopic (nanometer) scales are also considered and their importance discussed.

Keywords

Heat Transfer Contact Angle Contact Resistance Solidification Front Solder Bump 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Wien 2002

Authors and Affiliations

  • D. Poulikakos
    • 1
  • D. Attinger
    • 1
  • S. Haferl
    • 1
  • Z. Zhao
    • 1
  1. 1.Laboratory of Thermodynamics in Emerging Technologies, Institute of Energy Technology, Swiss Federal Institute of TechnologyETH CenterZurichSwitzerland

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