C++ program for computing the liquid-vapour equilibrium unsing cubic Equtions of State

A generic C++ routine for computing the liquid-vapour equilibrium for cubic equations of states (EoS) is presented. Given an isotherm, the solver return the saturation pressure and liquid and vapour density. Aside from the original Peng-Robinson EoS, a number of alternatives have been included. For further reference of this alternatives please refer to: Lopez-Echeverry J S, Reif-Acerman S, Araujo-Lopez E (2017). Peng-Robinson equation of state: 40 years through cubics. Fluid Phase Equil., 447:39-71本文提出了一款通用C++例程，用于基于立方型状态方程（Equations of State，缩写为EoS）计算液汽平衡。给定一条等温线，该求解器可输出饱和压力以及液相和汽相密度。除经典彭-罗宾逊（Peng-Robinson）状态方程外，本程序还集成了多款替代立方型状态方程。如需了解这些替代方程的详细信息，请参阅如下文献：Lopez-Echeverry J S、Reif-Acerman S、Araujo-Lopez E（2017）。《彭-罗宾逊状态方程：历经四十年的立方型方程发展》，《流体相平衡（Fluid Phase Equilibria）》，447卷：39-71