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首页> 外文期刊>Fluid Phase Equilibria >CEOS/A~E mixing rules from infinite pressure to zero pressure and then to no reference pressure
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CEOS/A~E mixing rules from infinite pressure to zero pressure and then to no reference pressure

机译：从无限压力到零压力再到无参考压力的CEOS / A〜E混合规则

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摘要

A CEOS/A~E mixing rule with no reference pressure is presented. An approach is developed that shows that the excess Helmholtz free energy at any pressure relative to its value for a van der Waals fluid is equivalent to the same relative value of the excess Gibbs energy at the same pressure. This approach allows the mixing rule to incorporate a G~E model at any pressure and temperature without requiring any additional binary interaction parameters or causing any thermodynamic inconsistency. The methodology of developing the no-reference-pressure mixing rule avoids the common assumption of constant excess Helmholtz free energy with respect to pressure that is often made for the infinite pressure approach and extends the range of solution of the liquid volume to the critical point for the zero-pressure approach. The mixing rule is density (temperature) dependent in an explicit form. Because of this density function, the mixing rule reproduces accurately the incorporated GE model.
机译：提出了没有参考压力的CEOS / A〜E混合规则。已开发出一种方法，该方法表明相对于范德华流体值，在任何压力下过量的亥姆霍兹自由能均等于在相同压力下过量吉布斯能量的相对值。这种方法允许混合规则在任何压力和温度下都包含一个G〜E模型，而无需任何附加的二元相互作用参数或引起任何热力学不一致。制定无参考压力混合规则的方法避免了通常针对无穷大压力方法做出的恒定恒定的相对于压力恒定的亥姆霍兹自由能的假设，并将液体体积的求解范围扩展到了临界点。零压力方法。混合规则以显式形式取决于密度（温度）。由于具有这种密度函数，因此混合规则可以准确地复制合并的GE模型。

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