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I am writing out .cas and .data files with file auto-save every few timesteps for a batch run using a journal file, but Fluent makes no attempt to write the files. What could be happening?

- March 17, 2023 at 8:59 am
  
  FAQ
  Participant
  
  If no error is generated by the auto-save, and there is no evidence from the transcript that Fluent has attempted to write the files, then it is possible that the data-frequency is set to flow-time and not time-step: file auto-save save-data-file-every flow-time In this scenario, a data-frequency of 5 would mean that the next data-file -write is 5 seconds away. The best way to verify this is to open the .cas file in a standalone Fluent session after the journal file has been read and inspect the auto-save settings. Once a .cas file has the flow-time data frequency setting, the journal file will have to first change this setting to time-step and then set the data-frequency: 1. file auto-save save-data-file-every time-step 2. file auto-save data-frequency 5 Doing this in the reverse order may cause the save-data-file-every setting to be ignored or the data-frequency zeroed. (Both will have the effect of the file not getting written.)

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