Bounds

The Bounds node is used to set the lower and upper bounds for the total moles of each compound along the reactor. Bounds for design variables such as temperature and flows are specified in the Design Values node for each case.
When the Enable Detailed Catalysis Model action has been performed, the bounds that refers to the catalyst compound are enforced to the catalyst free surface fraction, while the bounds on the catalyst complexes refers to their surface fractions.
You may find it useful to define bounds on some compounds, especially when the solution obtained with unbounded variables gives negative values, or if numerical difficulties are encountered during the run.

Total Moles

In this grid, the lower and upper bounds fo the compounds total moles and floated flow are defined for each optimization case.

The default values are -1E+08 for the lower bounds and 1E+08 for the upper bounds, effectively resulting in an unconstrained system.

Total Mass

This tab appears when Mass Density is selected as units of concentrations in the Units Configuration node.
It behaves similar to the Total Moles tab, except that Mass of compounds is used instead of their Moles.

Phase Name

The Phase Name tab is used to set lower and upper bounds for the compounds concentration in each phase and each case. The default values are -1E+08 for the lower bounds and 1E+08 for the upper bounds, effectively resulting in an unconstrained system.

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