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高等学校化学研究 ›› 2005, Vol. 21 ›› Issue (2): 205-208.

• Articles • 上一篇    下一篇

A Corresponding-state Model for Predicting Surface Tension

WANG Feng-kun, WU Jiang-tao, LIU Zhi-gang   

  1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
  • 收稿日期:2004-05-25 出版日期:2005-03-24 发布日期:2011-07-27
  • 基金资助:

    Supported by the National Basic Research Priorities Program of Ministry of Science and Technology of China(973 Project, No.2001CB209208) and the National Natural Science Foundation of China(No.50306021).

A Corresponding-state Model for Predicting Surface Tension

WANG Feng-kun, WU Jiang-tao, LIU Zhi-gang   

  1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
  • Received:2004-05-25 Online:2005-03-24 Published:2011-07-27
  • Supported by:

    Supported by the National Basic Research Priorities Program of Ministry of Science and Technology of China(973 Project, No.2001CB209208) and the National Natural Science Foundation of China(No.50306021).

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摘要： A generalized corresponding-state model based on two reference fluids was developed for the prediction of surface tensions for non-polar and weakly polar pure fluids and their binary mixtures.Four parameters,pc, Tc, Vc and ω, were used in this model, and the acentric factor ω was used as a scaling parameter.This model has been tested for 69 pure substances and 20 binary mixtures;the average absolute deviations are 0.28 and 0.20 mN/m, respectively.The results indicate that the predictions by means of this model were in good agreement with experimental data.In addition, the calculated deviation would increase with the excess surface tension rising, and if the excess surface tension is less than 3 mN/m, the prediction will be good and credible.

关键词: Corresponding-state, Surface tension, Binary mixtures

Abstract: A generalized corresponding-state model based on two reference fluids was developed for the prediction of surface tensions for non-polar and weakly polar pure fluids and their binary mixtures.Four parameters,pc, Tc, Vc and ω, were used in this model, and the acentric factor ω was used as a scaling parameter.This model has been tested for 69 pure substances and 20 binary mixtures;the average absolute deviations are 0.28 and 0.20 mN/m, respectively.The results indicate that the predictions by means of this model were in good agreement with experimental data.In addition, the calculated deviation would increase with the excess surface tension rising, and if the excess surface tension is less than 3 mN/m, the prediction will be good and credible.

Key words: Corresponding-state, Surface tension, Binary mixtures