Experimental and Numerical Characterization of Droplet-Induced Spreading-Splashing Transition in Surface Cooling Conference Paper uri icon

abstract

  • Copyright © 2016 by ASME. The effects of droplet train impingement on spreadingsplashing transition and surface heat transfer were investigated experimentally and numerically. Experimentally, a single stream of HFE-7100 droplet train was generated using a piezoelectric droplet generator with the ability to adjust parameters such as droplet impingement frequency, droplet diameter and droplet impingement velocity. A thin layer of Indium Tin Oxide (ITO) was coated on a translucent sapphire substrate, which was used as heating element. High-speed and infrared imaging techniques were employed to characterize the hydrodynamics and heat transfer of droplet train impingement. Numerically, the high frequency droplet train impingement process was simulated using ANSYS-Fluent with the Volume of Fluid (VOF) method [1]. The heat transfer process was simulated by applying constant heat flux conditions on the droplet receiving surface.

author list (cited authors)

  • Zhang, T., Muthusamy, J. P., Alvarado, J., Kanjirakat, A., & Sadr, R.

citation count

  • 2

publication date

  • July 2016