After computing one or more scenarios and saving the model, a large number of output files are generated and stored in the folder where my model is saved. Why?
Typical output files: .out, .rpc, and .alm files are results files that are generated each time a model is run and saved. These files are safe to delete because they will be regenerated the next time the model is computed.
Fire flow auxiliary result files: If multiple output files are found along with the model files you have most likely computed a scenario where the calculation options have been set to run automated fire flow (calculation type = fire flow) with the Auxiliary Output Settings set to store results. The reason is because a separate steady state simulation is computed for each fire flow node. If you've elected to store output by way of the Auxiliary output settings a separate set of results (.out file) needs to be saved for each fire flow node. See more on this further below.
SWMM solver output files: When saving a model that uses the Explicit (SWMM) solver some or all of the following files are saved.
Backup files: The .bak files are saved to provide a backup of your model files. These files are not controlled by the custom location discussed below.
See: Can I restore a backup file of my model project?
Result files are placed in the same directory as the model files by default.However, the directory in which these files are saved can be customized with the following steps.
The Auxiliary Output Settings are configured on the bottom right side of the Fire Flow alternative dialog. To disable storing of extra fire flow results, select "None" for "fire flow auxiliary results type" and "<no elements>" for "auxiliary output selection set". You will still always see the summary fire flow results in the fire flow node table (such as minimum pressures, available fire flow, etc). You can also refine the options to save only the results for certain elements, to help reduce the size of the fireflow output files.
See: Understanding Automated Fire Flow Results
Can I restore a backup file of my model project?
Understanding Automated Fire Flow Results
Error Saving: "Custom results path is invalid"