Specifying and Monitoring Stopping Criteria for a Steady-State Step

You can define one or more criteria in a steady-state flow step that end the step's iterations when they are met. You can also monitor all of the active stopping criteria as the analysis progresses.

This task shows you how to:

Before you begin: Define a steady-state flow step. For more information, see Defining a Steady-State Flow Step.
See Also
About Stopping Criteria

Specify Stopping Criteria

  1. Expand the Stopping criteria section of your step.
  2. Specify the number of consecutive Sampled iterations over which all of the active stopping criteria must meet their thresholds before the app ends the analysis.
  3. From the Error thresholds options, do the following:
    1. Select all of the solver equations for which you want to specify relative error stopping criteria.
    2. For each selected solver equation, enter a percentage for the error threshold in the Threshold field.
  4. From the Residual thresholds options, do the following:
    1. Select all of the solver equations for which you want to specify normalized residuals stopping criteria.
    2. For each selected solver equation, enter a percentage for the residual threshold in the Threshold field.
  5. Click OK.

Monitor Stopping Criteria

  1. If the Simulation Status dialog box is not already open, open it from the Simulate section of the action bar.
  2. Click the Plots tab.
    Each active stopping criterion is available as an X-Y plot and, if residual quantities are selected, the plots display these quantities as normalized residual plots.