期刊论文

中文

天然气工业

1000-0976

2016

36

12

113-118

10.3787/j.issn.1000-0976.2016.12.016

本校为第一机构

天然气黏度是基础而重要的参数,在天然气开采、输送和加工等领域有着重要的理论和应用价值。为了高效、低成本地获得精确的天然气黏度数据,基于气体分子运动论所得黏度、温度和密度关系,建立了计算天然气黏度的新模型和相应的函数关系式,用大量的实验数据对模型参数进行优化后,给出了天然气黏度随温度和密度的变化曲面图。研究结果表明:①天然气黏度随密度以及低密度区域温度的升高而升高;②天然气黏度在高密度区域随温度的升高而降低。新模型精确地预测了9个天然气样本的黏度数据,其计算值与1 53个处于250 ~ 450 K、0.1 ~ 140.0 MPa 区间的实验数据相比,平均相对偏差不超过1.9% ;其中,与测量误...

Viscosity of natural gas is a basic and important parameter, and it is of theoretical and practical significance in the sectors of natural gas recovery, transmission and processing. For obtaining the accurate data of viscosity efficiently at a low cost, a new model and its corresponding functional relation were developed based on the relationship among viscosity, temperature and density derived from the kinetic theory of gas. After the model parameters were optimized using sufficient experimental data, the diagram showing the vari- ation of viscosity along with temperature and density was prep...