Abstract

Accurate thermophysical properties will be essential to select and evaluate cryogenic fluids. The viscosity data of common cryogenic fluids was scattered below 200 K. To verify the data and reference correlations, in this work, the viscosity of nitrogen and argon in gas, liquid, and supercritical states were measured by using a vibrating-wire viscometer at temperatures between 90 K and 200 K and pressures between 0.3 MPa and 5 MPa. The standard uncertainty of the viscosity measurements was estimated to be 2.1 % over all temperature and pressure ranges. The results together with literature data were compared with the reference correlations. The results show good agreement between our measurements and those of the reference correlations within 2 %.

中文翻译：

---

在 90 K 至 200 K 温度和高达 5 MPa 压力下测量氮气和氩气的粘度

摘要

准确的热物理特性对于选择和评估低温流体至关重要。常见低温流体的粘度数据分散在200 K以下。为了验证数据和参考相关性，本工作使用振弦粘度计测量了氮气和氩气在气体、液体和超临界状态下的粘度。温度在 90 K 到 200 K 之间，压力在 0.3 MPa 到 5 MPa 之间。在所有温度和压力范围内，粘度测量的标准不确定度估计为 2.1%。将结果与文献数据与参考相关性进行比较。结果显示我们的测量值与参考相关性的测量值之间的一致性很好，误差在 2% 以内。