Add New Parameter to an Existing Phase

In addition to replace or modify the existing parameters for an existing phase in the original database, one can also add new parameters to this phase. In the AB_Original.tdb database, there is only one interaction parameter for the Liquid phase G(Liquid,A,B;0). Using the Append TDB function, we can add more interaction parameters to the Liquid phase. As shown in the AB_new parameter.tdb, another interaction parameter for the liquid phase, G(Liquid,A,B;1), is given as:

ParameterG(Liquid,A,B;1) 298 -2000; 6000 N !

Load the original AB_original.tdb and then load the AB_new parameter.tdb via the Append TDB function. As shown in the TDB viewer, the new interaction parameter (x-order value is 1) is added.

The calculated phase diagrams using both original database and original + appended databases are shown in Figure 1