This option specifies that liquid Surface Tensions are computed using a User-Added Subroutine (UAS). Up to 5 different subroutines (with reserved names UTRAN1 - UTRAN5) linked into PRO/II. At the user’s discretion, any of these may perform surface tension calculations.
For details on how to link User-added subroutines into PRO/II, consult the UAS/PDTS Installation Guide, available from SimSci. For details on how to construct User-added subroutines, consult the PRO/II User-added Subroutines User's Manual, also available from SimSci.
Thermodynamics - Technical Information
Thermodynamics - User-added Methods
Thermodynamics - User-added Transport Properties