Khrapak S A, Khrapak A G
Joint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, Russia.
J Phys Chem Lett. 2022 Mar 31;13(12):2674-2678. doi: 10.1021/acs.jpclett.2c00408. Epub 2022 Mar 18.
It is demonstrated that the freezing density scaling of transport coefficients in fluids, similar to the freezing temperature scaling, originates from the quasi-universal excess entropy scaling approach proposed by Rosenfeld. The freezing density scaling has a considerably wider applicability domain on the phase diagram of Lennard-Jones and related systems. As an illustration of its predictive power, we show that it reproduces with an excellent accuracy the shear viscosity coefficients of saturated liquid argon, krypton, xenon, and methane.
结果表明，流体中输运系数的冻结密度标度与冻结温度标度类似，源于罗森菲尔德提出的准普适过量熵标度方法。在 Lennard-Jones 及相关系统的相图上，冻结密度标度具有相当广泛的适用范围。作为其预测能力的一个例证，我们表明它能以极高的精度再现饱和液态氩、氪、氙和甲烷的剪切粘度系数。
