This paper presents an experimental study of surface wettability on a stainless plate in a high-temperature, high-pressure environment. Using a pressure vessel, we measured contact angles of water droplets at temperatures from 20 to 300°C and a constant pressure of 15 MPa, as an indicator of macroscopic surface wettability. Measured contact angles decreased with temperature below 250°C, clustering around a straight line at temperatures below 120°C and around another line in the range from 120 to 250°C. At temperatures above 250°C, on the other hand, the contact angles remained constant, independent of temperature, and contrary to the existing theoretical model, no highly hydrophilic condition or null contact angle condition was achieved.
- Nuclear Engineering Division
Contact Angle of Water Droplets in a High-Temperature, High-Pressure Environment
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Hayashi, T, Hazuku, T, Takamasa, T, & Takamori, K. "Contact Angle of Water Droplets in a High-Temperature, High-Pressure Environment." Proceedings of the 12th International Conference on Nuclear Engineering. 12th International Conference on Nuclear Engineering, Volume 1. Arlington, Virginia, USA. April 25–29, 2004. pp. 797-800. ASME. https://doi.org/10.1115/ICONE12-49418
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