EBSILON®Professional Online Documentation
With the help of the "Definition-Evolution" bar (under the menu View --> Toolbars ) it is possible to have the development of the definitions of variables displayed. For this, one can choose between activating either the definition development or the backtracking of a value (mass flow, pressure, or enthalpy).
This visualization is operated by means of the counter to the right of the dropdown box or by the slide control next to it on the right. With these control elements you can navigate forth and back through the individual steps of the development.
For each line there is a colour-coded visualization of which variables are defined in the respective level:
The lines that have changed in the respective level are additionally framed green to be detectable more easily.
In the definition development, in the first level all those lines are marked by colour on which the variables are set by start values or measured values or can be calculated directly by the connected component.
In the second level, all those lines are marked by colour on which the variables can be calculated out of the variables from the first level through a component equation.
In the next level, all those lines are marked by colour on which the variables can be calculated out of the variables from the previous level through a component equation.
For backtracking, one line has to be selected first for which the backtracking is to be activated. In the next levels it is shown from which lines the respective value on the selected line is derived.
This visualization is helpful for analyzing discrepancies in variable definitions like e.g. double or missing definitions.
The levels treated here should not be confused with the iteration steps. For in each iteration step, the equation system (in linearized form) has to be solved entirely. The levels examine the solvability of the equation system within an iteration step by analyzing which variables depend on which variables.