Contact angles and interface behavior during rapid evaporation of liquid on a heated surface
Abstract
Photographic observations of the boiling phenomena have played an important role in gaining insight into the
boiling mechanism. This paper presents a brief historical review of the available literature on the photographic studies
in pool and flow boiling. This is followed by the results of the photographic studies conducted in the authors’ laboratory
on liquid droplets impinging on a heated surface. Liquid–vapor interface and contact line movements are observed
through a high speed camera at high resolution. The effect of surface roughness and surface temperature on dynamic
advancing and receding contact angles has been studied. In addition, the effects of rapid evaporation on advancing
and receding contact angles, liquid–vapor interface motion, and the dryout front propagation have been investigated.