A Mixture Property is used to compute a property function that depends on the concentration of the species in a thermodynamic system. Some examples of the available property functions are density, enthalpy, heat capacity, and surface tension.

Right-click the relevant Thermodynamic System node (see Figure 2-8), Predefined System node, or the relevant External Thermodynamic System node, and select Mixture Property to start the Mixture Property Wizard.

The Mixture Property Wizard contains the following steps:

The settings in this step corresponds to those for Select Properties in the Species Property Wizard. Click the Next button () to proceed to the next step.

First select the Species composition base unit to be used for function arguments. Select Mole fraction or Mass fraction.

Select the species to be included in the list. Use the Add All button () to add all species in the thermodynamic system. It is also possible to select a subset of the available species. In that case use the Add Selected button () to add species. The Selected species table is updated as you add species.

Click the Next button () to proceed to the next step in the wizard.

The final step of the wizard displays an overview of the parameters and functions that the wizard has added. Click the Finish button () to exit the wizard and add the properties to the current thermodynamic system.

Selecting a desired Mixture Property node to display its settings window.

When creating mixture properties, the resulting functions are collected under the Mixture node. You can create new functions from an existing Mixture node. Right-click the node and select Mixture Property from the context menu to start the Mixture Property Wizard.