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A New Model for Prediction of Surface Tension of Pure Fluids

YANG Chunsheng; ZHONG Chongli   

  1. Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing
    100029, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-02-28 Published:2004-02-28
  • Contact: YANG Chunsheng

预测纯流体表面张力的一个新模型

杨春生; 仲崇立   

  1. Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing
    100029, China
  • 通讯作者: 杨春生

Abstract: A new model based on the theoretical work of Boudh-Hir and Mansoori was developed for
prediction of surface tension of pure fluids. The new model has the advantage of not
requiring densities in the calculation, and the input parameters are critical temperature
and connectivity indices. A total of 209 compounds covering a wide variety of substances
were used to develop the model, and the overall correlative AAD is 4.21%. To test its
predictive ability, the model is further used to predict the surface tension of 25 more
compounds that were not included in the model development. The overall predictive AAD is
4.07%, which illustrates that the model is reliable. The model proposed is simple and easy
to apply, with good predictive accuracy.

Key words: connectivity index, critical temperature, Gibbs free energy, surface tension, pure fluid

摘要: A new model based on the theoretical work of Boudh-Hir and Mansoori was developed for
prediction of surface tension of pure fluids. The new model has the advantage of not
requiring densities in the calculation, and the input parameters are critical temperature
and connectivity indices. A total of 209 compounds covering a wide variety of substances
were used to develop the model, and the overall correlative AAD is 4.21%. To test its
predictive ability, the model is further used to predict the surface tension of 25 more
compounds that were not included in the model development. The overall predictive AAD is
4.07%, which illustrates that the model is reliable. The model proposed is simple and easy
to apply, with good predictive accuracy.

关键词: connectivity index;critical temperature;Gibbs free energy;surface tension;pure fluid