Second Inflection Point of the Surface Tension of Water

作者：Kalova Jana^*; Mares Radim

来源：International Journal of Thermophysics, 2012, 33(6): 992-999.

DOI：10.1007/s10765-012-1238-5

• IAPWS
• Inflection point
• Molecular dynamics
• Supercooled water
• Surface tension

The theme of a second inflection point of the temperature dependence of the surface tension of water remains a subject of controversy. Using data above 273 K, it is difficult to get a proof of existence of the second inflection point, because of experimental uncertainties. Data for the surface tension of supercooled water and results of a molecular dynamics study were included into the exploration of existence of an inflection point. A new term was included into the IAPWS equation to describe the surface tension in the supercooled water region. The new equation describes the surface tension values of ordinary water between 228 K and 647 K and leads to the inflection point value at a temperature of about 1.5 A degrees C.

• 出版日期2012-6