A steady state calibration consists of correlating known "instantaneous" field data with the Calibrator.  You have the option of specifying five unique sets of information within Calibrator in order to correlate the model with known field data.  Once the modeling parameters have been specified, you are able to run the calibration simulation, review results and then write those results to any project data set.

Specifying Steady State Parameters

You can specify one or more groups in which a calibration is to be made. Click on any of the links below to learn more about each tab and its purpose during a Steady State Calibration.

  • Roughness Group  - This tab allows you to specify ranges for pipe roughness coefficients during the calibration simulation.

  • Demand Group   - This tab allows you to specify ranges for nodal demands during the calibration simulation.

  • Pipe Status Group   - This tab allows you to vary the pipe status of a selected pipe or series of pipes in order to more accurately correlate the calibration.

  • Junction Pressures  - This tab allows you to enter known field measured pressures for specific junction nodes across the distribution system.

  • Pipe Flows  - This tab allows you to enter known field measured flow for specific links (pipes, valves, pumps) across the distribution system.

Running a Steady State Calibration

To run the Steady State calibration, from the Run menu, select Start. The Run tab will now be displayed in which the number of iterations can be viewed.  

Viewing Results

Once a steady state calibration simulation has been performed, click on the Run Summary tab to review output results such as overall fitness convergence, average pressure variation and average flow variation.  

Exporting Calibration Data

If you are satisfied with the steady state calibration simulation, results can be exported to any of the three data sets (pipe roughness, junction demands, and pipe status).