Bubble & Dew Point Calculations

Calculates bubble point and dew point (pressure and temperature) for a ternary hydrocarbon mixture using Peng-Robinson EoS.

• Bubble point: first vapor bubble forms from liquid (V = 0)
• Dew point: first liquid droplet forms from vapor (V = 1)

Uses the property-array workflow: build property table, then pass zi and props to saturation functions.