Go to the section Stops and Restarts of System Coupling Analyses for general information on restarting a coupled analysis and links to context-specific information.
For System Coupling in Workbench: Restarting a Coupled Analysis in Workbench.
For System Coupling's GUI or CLI: Restarting a Coupled Analysis.
To restart your coupled analysis, you will also need restart information specific to the participants connected to System Coupling.
For details on other participant systems connected to System Coupling, see the following lists of supported systems and references to their corresponding documentation regarding restarts:
A restart of a System Coupling analysis requires corresponding restart points to exist in the coupling service and in each of the solvers participating in the analysis.
CFX will automatically generate the corresponding backup
(.bak) files based upon requests received from
System Coupling. Note that these files are generated in addition to any other manually
requested backup files (or results files) and are retained even if the
Backup Data Retention option (Option in the CFX-Pre User's Guide) is set to
Delete Old Files.
When the CFX solution is restarted, the default behavior is that the results file (.res) corresponding to the current restart point will be used. To specify a different restart point:
In CFX-Solver Manager, on the Define Run dialog box, select the Initial Values tab. For the Initialization Option, select Initial Conditions.
Enable the Initial Values Specification.
Next to File Name, select the browse icon (
).Browse to the backup files (.bak) or previous results file (.res), and select the file that matches the desired restart point. Backup files from a v1.0 coupled analysis in Workbench will have "SC_ess" in their name. Backup files from a v2.0 command line coupled analysis will have "SC_CP_ess" in their name.
Make sure that you select the restart point that corresponds to the restart points selected for tSystem Coupling and the other coupling participant.
If the case that you are restarting was initialized from an independent CFX analysis, the time listed on the backup file (.bak) or results file (.res) might not match the corresponding restart points in System Coupling and the other participant system (such as Mechanical). Use the CFX-Solver Output file to determine which time steps correspond to the System Coupling restart points.
Click Open to read-in the data for the selected restart point.
Continue History From can be enabled or disabled. Click Save Settings.
Close CFX by selecting File > Close CFX-Solver Manager.
Make the needed setup changes in CFX-Pre.
Close CFX-Pre by selecting File > Close CFX-Pre.
In CFX-Solver Manager, on the Define Run dialog box, select the Initial Values tab. For the Initialization Option, select Initial Conditions.
Enable the Initial Values Specification.
Next to File Name, select the browse icon (
).Browse to the backup files (.bak) or previous results file (.res).
If Workbench crashed while writing the final file, that file will be corrupt. In this case, select any of the previous files. Backup files from a v1.0 coupled analysis in Workbench will have "SC_ess" in their name. Backup files from a v2.0 command line coupled analysis will have "SC_CP_ess" in their name.
Make sure that you select the restart point that corresponds to the restart points selected for System Coupling and the other coupling participant.
Click Open to read-in the data for the selected restart point.
Continue History From can be checked or unchecked. Click Save Settings.
Close CFX by selecting File > Close CFX-Solver Manager.
To restart the solution from the first time step, in the Project Schematic right-click System Coupling's Solution cell and select Clear Generated Data.
Any initial values in the CFX system from a results file or backup file will continue to exist and be used in the CFX setup. You need to clear that data manually.
Restart the run from the System Coupling system.