Huber Marcia L, Perkins Richard A, Lemmon Eric W
Applied Chemicals and Materials Division, National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305 USA.
Int J Thermophys. 2024;45(10):146. doi: 10.1007/s10765-024-03440-1. Epub 2024 Oct 10.
We present a new wide-ranging correlation for the viscosity of nitrogen based on critically evaluated experimental data as well as calculations. The correlation is designed to be used with densities from an existing equation of state, which is valid from the triple point to 1000 K, at pressures up to 2200 MPa. The estimated uncertainty (at the 95% confidence level) for the viscosity varies depending on the temperature and pressure, from a low of 0.2% in the dilute-gas range near room temperature, to 4% for the liquid phase at pressures from saturation up to 34 MPa, and maximum of 8% in the supercritical region at pressures above 650 MPa. Extensive comparisons with experimental data are provided.
The online version contains supplementary material available at 10.1007/s10765-024-03440-1.
我们基于严格评估的实验数据以及计算结果，给出了一种新的、适用范围广泛的氮气黏度关联式。该关联式旨在与现有状态方程的密度一起使用，该状态方程在从三相点到1000K、压力高达2200MPa的范围内有效。黏度的估计不确定度（在95%置信水平下）随温度和压力而变化，从室温附近稀薄气体范围内的低至0.2%，到饱和压力至34MPa的液相中的4%，以及在压力高于650MPa的超临界区域中的最大值8%。文中提供了与实验数据的广泛比较。
在线版本包含可在10.1007/s10765-024-03440-1获取的补充材料。
