Calculation Executive Summary Dialog Box (Implicit Solver)

The Calculation Executive Summary dialog box opens automatically after you compute a model. This dialog box reports a summary of the calculations performed on your model. You can also see this report by clicking Home > Calculation Summary.

Click Detailed Summary for more information about the calculation or Close to close the dialog box.

The Executive Summary dialog box displays the following information:

Scenario Label	Displays the currently selected scenario.
Run Completed	Displays the date and time at which the run was completed.
Storm Data Label	Displays the currently selected hydrology alternative.
Global Storm Data	Displays the current global storm data.
Return Event	Displays the recurrence period of the global storm data.
Total Inflow Volume	Displays the total volume of flow that enters the model during the course of the analysis.
Total System Overflow Volume	Displays the total volume of flow that exits the system due to overflows. This value does not include volume of flow that exits at outfalls.
Total Gutter Volume Change	Displays the gutter flow volume difference between the initial state and the state at the end of the computation.
Total System Outflow Volume	Displays the total volume of flow that exits the outfalls during the course of the analysis.
Total System Volume Change	Displays the total system flow volume difference between the initial state and the state at the end of the computation.
Continuity Error	Displays the total system computational continuity balance error which accounts for total inflows into the system, outflows, flow losses due to overflows, and volume changes. Generally speaking, a high continuity error (>5%) is an indication that the system is hydraulically very challenging and the hydraulic engine may have difficulty achieving stable results.
Total N-R Iterations	Displays the number of Newton iterations used in the calculation. This attribute value is used to prevent the numerical solver from unlimited iterations under situations when the solver is unable to reach convergence. A more hydraulically-complex model requires a larger number of iterations than a less complex model.