PO.EoS.Flash.PR Function
Description:
PT Flash calculation using Peng-Robinson EoS. Returns V (vapor fraction), L (liquid fraction), x (liquid composition), y (vapor composition), or K (K-values) based on output parameter.
Excel Function Syntax:
=PO.EoS.Flash.PR(T, P, zi, props, output, kij)
Parameters:
| Parameter | Description |
|---|---|
| T | Temperature, [K]. |
| P | Pressure, [Pa]. |
| zi | Feed mole fractions (N×1 range, must sum to 1.0). |
| props | Component properties (N×4 range: Tc, Pc, omega, Mw). |
| output | 'V' for vapor fraction, 'L' for liquid fraction, 'x' for liquid composition, 'y' for vapor composition, 'K' for K-values. |
| kij | Binary interaction parameter matrix (N×N). Omit in formula for default zeros. |
Used in Blueprints
PT Flash Calculation
Performs rigorous PT flash calculation for a ternary mixture (ethane, propane, n-pentane) using the property-array workflow:
Separator Test
Demonstrates array composability by chaining Flash calculations in a two-stage separator: