Surface-Tension Related Flows in Microgravity and Microscale: Hanging Droplet, Thin Films, and Positive Surface Tension Temperature Coefficient (Self-rewetting Fluids)
摘要
Thermocapillary-driven convection in geometries different from the half-zone liquid bridges is introduced. The first section illustrates an example in the case of the hanging droplet, a droplet placed on a heated disk whereas a cold disk is installed near the droplet head. The second section introduces another example in the case of the thin film, especially focusing on the solutal Marangoni effect in coating processes. The third section illustrates an example of the application. Effects of the temperature dependence of the surface tension on the thermal devices are introduced, with focusing on the liquids with positive temperature coefficient of surface tension, or “self-rewetting fluids.”