[1] Exceptions include the physical or operational parameters such as dimensions, operational mode, etc.
[2] This can be changed by checking the appropriate label checkbox on the Layout tab of the Preferences form.
[3] Another type of variable is a composite variable. Composite variables are calculated from the model state variables.
[4] In GPS-X, SRT is calculated on a total suspended solids (TSS) basis. The F/M ratio is calculated on a CBOD5/VSS basis.
[5] By convention, this is the object’s effluent flow stream level.
[6] By convention, this is the object’s effluent flow stream level.
[7] Composite variables are variables calculated from a combination of state variables and other constants.
[8] Here, “System” refers to the model, that is, the system of equations.
[9] The black box object (and some models in the toolbox object) in GPS-X does not use the material balance to establish input-output relationships; however, it is defined to properly map model state variables from input to output points.
[10] Initial conditions are process object attributes and can be accessed from the object’s process data menu
[11] Procedures are a series of ACSL commands
[12] If you
decide to create a new library directory and want to use this
library with GPS-X, you must select
View > Preferences >Layout, and then choose the
appropriate library from the Default Library drop-down
menu.
[13] See Chapter 3, Program Structure of the ACSL Reference Manual for more information on the explicit program structure in ACSL.