Fluids for the A3 example simulation

This simulation uses two fluids from the simulation-specific Model Library, VLEFluid and VLLEFluid.

Both fluids use the NRTL method, which provides the best fit for this non-ideal system. They also use the same thermodynamic data for calculations. However, VLEFluid includes vapor-liquid equilibrium (VLE) calculations while VLLEFluid includes vapor-liquid-liquid equilibrium (VLLE) calculations. We use VLLEFluid only in:

• The Ternary1 Ternary Phase Diagram to visualize the three-phase separation in the decanter following the first distillation tower.

• The Binary1 Binary Phase Diagram to visualize the behavior of the azeotrope between water and isopropyl alcohol.