1. Sub-Flowsheet Operations 2-19
2-19
2.5.2 Parameters Tab
The Parameters tab allows you to specify variables used for the
MASSBAL equation-based solver, select derivative options to help the
calculations converge, and manipulate the solving behaviour.
Figure 2.12
MASSBAL Specifications Group
The MASSBAL Specifications group contains a table and four buttons
that allows you to manipulate the specifications for the MASSBAL
equation-based solver.
The table contains the list of variables that are used for the
specifications. The Value column allows you to specify the variables
value. The Units column allows you to specify the units for the variable
values entered.
Clicking the Populate Specifications button tells HYSYS to check for unit
operations or streams (except SOURCE streams) with specified values
and adds them to the list of specifications.
The Degrees of Freedom field displays the number of degrees of
freedom available. The number of degrees of freedom is not applicable
to the Sequential Modular solving mode.