File Management in Simulation

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During a Solve, several files are created. Some of these can be deleted after the solution but some need to be retained for postprocessing or for feeding other subsequent analyses. Since you can perform several different analyses on a single model or even have several models in the same Simulation project it is imperative that the solution files be managed in a consistent and predictable manner. This is accomplished as explained in the following sections:

Consistent Directory Structure for Simulation Analyses


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Solution Files

Default behavior: By default an analysis in Simulation saves only the minimal files required for postprocessing. Typically these include results files (file.rst, file.rth, file.rmg, file.psd), input file (ds.dat), output file (solve.out), and some other files that have valuable information about the solution ( file.BCS, file.nlh, file.gst). Of these only the results file is generally of significant size.

Future Analysis: If the results of this analysis are to be used as a load or an initial condition in a subsequent analysis then additional files may need to be saved. Declaring your intent to use this in the future will automatically save the required files and reuse them in the subsequent analysis. Refer to Define Initial Condition for details of these analyses.

Delete Unneeded Files: The solution process creates other files that are typically not needed for postprocessing or are not used in subsequent analyses. By default Simulation will delete these files at the end of solution. However, if for any reason, you want to keep all the files you could choose to do so.

Note that ANSYS result files can become rather large with respect to the dsdb. You can use the Output Controls on the analysis settings page to limit only desired types of results be written to the rst file. (For example, if strains are not needed, you can turn them off which would create a smaller result file). In addition, for advanced ANSYS users, Command objects can be used to further limit output via the OUTRES command.

An external result file is needed to post results. The following behavior will occur:


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Portability Considerations

Whenever a dsdb file is transported through any medium such as ftp or file sharing, it is imperative that the entire Simulation folder be included. The result file must accompany a solved dsdb file. If the result file is not present and the solved dsdb file is resumed, any results that were solved in the tree will still be present but no additional postprocessing will be performed. Not including the result file will prevent animations, display shapes, and restarts. Any user-defined images will not be realized as well. Upon resuming in this case, a warning will be issued in the message window stating that the result file is missing.


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Project Page Interaction

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