In this report, two kinds of experiments to measure contact angles on superheated walls were conducted in order to get useful information for the evaluation of surface wettability in boiling phenomena or the designing of liquid-film evaporation devices. First one is liquid-droplet method in which the temperature of surrounding argon gas or water vapor atmosphere was controlled equal to the solid temperature, and the contact angles of water droplet were measured. The other one is quasi-two-dimensional subcooled boiling method in which the contact angles of quasi-two-dimensional bubbles were measured.
展开▼
