A Photographic insight into the motion of liquid-vapor interface during rapid evaporation of a liquid droplet 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 author’s 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 an
surface temperature on dynamic advancing and receding contact
angles has been studied. Also, the effect of rapid evaporation
on advancing and receding contact angles, liquid-vapor
interface motion, and dryout front propagation have been
investigated.
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