You can configure a range of output quantities that are integrated across the domain or parts of the domain within the Outputs section of the control panel. Outputs can also be used as stopping conditions.
Click the + icon to the right of Outputs.
Choose an output type and set the required parameters. Learn more about output types and their parameters here.
Choose whether to calculate and plot a Trailing Average, specifying the Averaging Iterations, which is the number of iterations to include in this average.
(For steady state cases only) Choose to add a Convergence Monitor, which will plot the maximum difference between past trailing averages and the current trailing average as a percentage of the current trailing average. The Convergence Monitor can be defined to use a different number of Averaging Iterations than in the above Trailing Average option. Also, Iterations to Consider defines the span over which the previous trailing averages will be compared to the current trailing average in order to work out the maximum difference.
Choose whether to add a stopping condition using the output you just created by clicking Add. You'll be taken to the Stopping Conditions panel where you can adjust the parameters. Learn more about stopping conditions here.
Notes:
When computing outputs on open geometries (geometries that are not fully-enclosed), the reference values are applied to any open elements of the geometry. If the reference values differ greatly from the free stream or operating conditions, this may lead to unexpected results. Ensure that the reference values are set correctly.
You can only add a convergence monitor to steady state simulations.
Important: When adding a convergence monitor, some of the parameters are the same as the parameters found when setting up simulation stopping conditions (Averaging Iterations and Iterations to Consider). These parameters are not linked. You cannot modify stopping conditions from the output properties panel, even when when the monitored quantity is the same in the stopping condition and the output.
Many surface output quantities can be created after a simulation has run, including at intermediate iterations or time steps at which full copies of the entire flow solution have not been saved. This is because many of the surface integrals needed to calculate these outputs are still saved for these intermediate results.
To delete an existing output, first click to select it, and then click on the trash icon to the bottom left.