APPROXIMATE DERIVATION OF QUASI-EMPIRICAL CUBIC EQUATIONS OF STATE FOR FLUIDS

HU Jiawen; YIN Hui’an; TANG Minglin

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APPROXIMATE DERIVATION OF QUASI-EMPIRICAL CUBIC EQUATIONS OF STATE FOR FLUIDS

更新时间：2025-12-10

- APPROXIMATE DERIVATION OF QUASI-EMPIRICAL CUBIC EQUATIONS OF STATE FOR FLUIDS
- CIESC Journal Issue 6, Pages: 731-737(2003)
- 作者机构：
  
  成都理工大学应用化学系
- 作者简介：
- 基金信息：
- DOI：
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- Online First：25 June 2003，
  
  Published：25 June 2003
- 稿件说明：
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HU Jiawen, YIN Hui’an, TANG Minglin. APPROXIMATE DERIVATION OF QUASI-EMPIRICAL CUBIC EQUATIONS OF STATE FOR FLUIDS[J]. CIESC Journal, 2003, (6): 731-737.
DOI：

HU Jiawen, YIN Hui’an, TANG Minglin. APPROXIMATE DERIVATION OF QUASI-EMPIRICAL CUBIC EQUATIONS OF STATE FOR FLUIDS[J]. CIESC Journal, 2003, (6): 731-737. DOI：

摘要

将virial方程高次项的贡献近似地整合到三项截断式中，然后利用第2 virial系数B的近似式对virial方程的二项及三项截断式进行不同的形式变换和扩展，近似地得到了Martin、Abott的总包性立方型方程以及一些半经验立方型方程或其类似形式，如van der Waals、Clausius、Redlich-Kwong、Usdin-McAuliffe (Fuller)、Martin、Peng-Robinson、Patel-Teja、Harmens-Knapp、Tong-Liu、LHSS、MKS、Du-Guo、CCOR、SIRK，Lee-Edmister方程等，这表明上述方程具有一定的统计力学基础.另用同样方法得到了9个新的三次方程，其中有些方程在形式和参数方面具有较大的灵活性，因而可能具有较好的应用前景.

Abstract

The contributions of the high-order terms in virial equation are approximately incorporated into the truncated virial equations with three terms in this paper.By means of the approximate expression of second virial coefficient and some transformations and extensions of truncated virial equations with two and three terms，the general cubic equations of state proposed by Martin and Abott，and some quasi-empirical equations of state or their similar forms are derived approximately，such as van der Waals，Clausius，Redlich-Kwong，Usdin-McAuliffe (Fuller)，Martin，Peng-Robinson，Patel-Teja，Harmens-Knapp，Tong-Liu，LHSS，Modified Kumar-Starling，Du-Guo，CCOR，SIRK，Lee-Edmister equation，etc.The results indicate that the above equations are supported by statistical mechanics in some way.Besides，nine new cubic equations of state are obtained with the same method，some of which are flexible in form or parameters and prospective in application.

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