液滴ラジエータにおける液滴回収過程の観察

抄録

The first stage of droplet collection in a droplet collector of the Liquid Droplet Radiator is collisions of droplet streams with a liquid film formed in an inner surface of the collector. When the droplet streams are absorbed in this liquid film, no splashes should be formed to achieve high collection efficiency. As specifications of a droplet collector, a miscapture rate of incoming droplets is required to be less than 10^-6. The collisions and the splashing phenomena of incoming droplets with a liquid film was observed by using a magnifying CCD camera with synchronized irradiation by a laser diode. When the uniform droplet stream is produced where the droplet diameter is less than 300mm, and the droplet speed less than 20m/s, no splash is observed.