气液两相平衡计算。ＰＲ状态方程计算ＥＯＳ。闪蒸计算，返回逸度，组分摩尔数。可以直接调用-Liquid two-phase equilibrium calculations. PR equation of state EOS. Flash calculations, returns fugacity number of moles of the components. You can directly call

Perform two phase equilibrium calculation with successive substitution method (SSM) for the below five-component system at 390K and selected pressure points (4.42, 5, 5.55 MPa) to determine vapor phase fraction, vapor/liquid phase composition and ite