首页   按字顺浏览 期刊浏览 卷期浏览 The Viscosity of Carbon Dioxide
The Viscosity of Carbon Dioxide

 

作者: A. Fenghour,   William A. Wakeham,   V. Vesovic,  

 

期刊: Journal of Physical & Chemical Reference Data  (AIP Available online 1998)
卷期: Volume 27, issue 1  

页码: 31-44

 

ISSN:0047-2689

 

年代: 1998

 

DOI:10.1063/1.556013

 

出版商: AIP

 

数据来源: AIP

 

摘要:

When representative equations for the viscosity of carbon dioxide were published in 1990, it was recognized that, owing to inconsistencies among the available experimental liquid viscosity data which could not be resolved, new measurements were necessary. Since then, two new sets of measurements have been performed and it is appropriate to revise the published equations in order to improve their performance in the liquid region. In the previous work, the excess viscosity was represented by two separate equations, one for the gas phase and the other, a provisional one, for the liquid phase. Both equations were joined by a blending function. In the present work, the excess viscosity for the whole thermodynamic surface is represented by one equation. The resulting overall viscosity representation for carbon dioxide covers the temperature range 200 K⩽T⩽1500 K and densities up to 1400kg m−3. In terms of pressure, the viscosity representation is valid up to 300 MPa for temperatures below 1000 K, whereas for higher temperatures and owing to the limitation of the equation of state used, the upper pressure limit is restricted to 30 MPa. The uncertainties associated with the proposed representation vary from±0.3&percent; for the viscosity of the dilute gas near room temperature to±5.0&percent; at the highest pressures. Tables of viscosity generated by the representative equations are included for easy reference and to assist validation of computer coding. ©1998 American Institute of Physics and American Chemical Society.

 

点击下载:  PDF (182KB)



返 回