Setting Up a Staged Simulation

In a single simulation, you set up multiple physics settings using the stages.

Before starting to create staged physics settings, make sure that you can run an unstaged simulation successfully.
  1. To define a new stage, right-click the Automation > Stages node and select New.
    Repeat the step until you reach the number of configurations you want to run in this single simulation. You can rename a stage so that it reflects the physics configuration in the stage.
After creating the stages, you mark the physics settings you want to vary in the simulation. Simcenter STAR-CCM+ supports region settings, boundary settings, physics model selection, interface settings, and solver settings.
  1. For each stageable property you wish to modify, right-click the node and select Staged.
    注You cannot stage motion configurations.
  2. After marking the staged properties, you have three options to set the active stage:
    • Select the Automation > Stages node and set Active Stage.
    • In the Manage Active Stage menu, set the active stage as follows:


    • Use the simulation operation Set Active Stage:


    The active stage has a different icon than the inactive stage.
    注Setting a new active stage is not possible without completing the current time step.
  3. To populate the values for the staged properties:
    1. You select an active stage, for which you populate the values.
    2. Navigate the staged objects in the simulation tree and set the values or use the read-only staged tree on the right hand side.
      The staged tree lists only the staged objects of the active stage.
    For physics models, Simcenter STAR-CCM+ currently only supports the Time model. That is, you can only set different Time models for different stages within the physics models. All other models must stay the same in all the stages:




To run a simulation with multiple stages, you can proceed through the stages manually or else automate the sequence using a simulation sequence.
  1. To run the simulation manually:
    1. In the Manage Active Stage menu, select the stage you wish to run.
    2. In the Solution toolbar, click Run
    3. When the simulation complete, save any scenes or export data from that stage.
    4. Set the next stage as active and click Run. The solution continues from state at the end of the previous stage.
      An example of a residual plot of running 3 steady stages is shown below:


  2. To run the simulation with a simulation sequence, use the simulation operation Set Active Stage, at the points where you wish to change stage.
    An example is shown below: