A new cubic equation of state (EoS) was proposed to address the lack of repulsion terms in conventional cubic EoSs, with a molar critical compressibility factor Z_c = 0.273 and suitable for most molecular fluids. Similar to Soave-Redlich-Kwong (SRK) EoS, its α-function is related to the fluids’ acentric factors by fitting with 44 molecular fluids. Differently, the new EoS can pass the α-consistency test, confirming the robustness across all temperatures. With only three parameters (a_c, b, m) to be determined, it is as convenient as the SRK EoS in application. But it is more accurate - tested against experimental data - for both single and multi-component fluids than SRK EoS.

提出了一种新的立方状态方程 (EoS)，以解决传统立方 EoS 中缺乏排斥项的问题，其摩尔临界压缩系数Z _c  = 0.273，适用于大多数分子流体。与 Soave-Redlich-Kwong (SRK) EoS 类似，其α函数通过与 44 种分子流体拟合，与流体的偏心因子相关。不同的是，新的 EoS 可以通过α一致性测试，确认在所有温度下的稳健性。只需要确定三个参数（a 、 _c、b、m），应用上与SRK EoS一样方便。但对于单组分和多组分流体，它比 SRK EoS 更准确（根据实验数据进行测试）。