Bentley HAMMER CONNECT Edition Help

Steady State Run

This feature allows you to obtain a hydraulic steady state from the data in your HAMMER CONNECT model. When the Steady button is selected in the “Type of Run” area of the Run dialog box, the model data is sent to the steady state solver so it can begin the calculations. If errors are encountered, the steady state solver will show a dialog box with a list of messages. Prior to a steady state run:

  • Steady State Options—The parameters that control the steady state hydraulic computations are similar to those in HAMMER CONNECT. They can be modified using the Tools > Options menu command and clicking the Steady State tab:
  • Steady State Trials is set for maximum accuracy by default. We recommend you not modify this setting. This is similar to the setting in HAMMER CONNECT.
  • Steady State Accuracy is set for maximum accuracy by default. We recommend you not modify this setting. This is similar to the setting in HAMMER CONNECT.
  • Pump Curves Linear Mode is either True or False. If True, the steady state solver uses linear interpolation to estimate the curve if the solution lies between points entered in the pump table. This method is consistent with the transient solver in HAMMER CONNECT.
  • Friction Method is either Hazen-Williams (for which the Friction Coefficient is a C factor) or Darcy-Weisbach. Selecting Darcy-Weisbach will display both the Darcy-Weisbach f (for the Friction Coefficient) and the Roughness Height in the Drawing Pane. Roughness Height is only used for a steady state run and typical values are available from the material library.
  • Element Data for Steady State—Some fields in the Drawing Pane are only required for a steady state run, as described by tooltips. If some information required by the steady state solver is missing, HAMMER CONNECT will display a Warning Message dialog prompting for additional data or an Error Message dialog with instructions on how to proceed. Typically, error messages are related to problems in the network topology, such as a pump or valves not being connected on both its intake and discharge sides.