CAPE-OPEN

Hello,

I have been trying to add Air as a compound to the property package but a message keeps showing up.

If you go to the Advanced Package Configuration, Property Calculations, you will see a liquid viscosity calculation routine that needs pure compound contributions (e.g. Logarithmic mixing). You could either set it to N/A, or, if you need liquid viscosity in your simulation, you will need to add some data for Air.