Reacting Flows

Reacting Flows

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  3. I have some flamelet files that take a really long time to generate, but I can’t find a way to shortcut the flamelet and PDF generation steps in a simulation that uses identical files. What are the steps to reusing Fluent flamelet files from a previous simulation?

I have some flamelet files that take a really long time to generate, but I can’t find a way to shortcut the flamelet and PDF generation steps in a simulation that uses identical files. What are the steps to reusing Fluent flamelet files from a previous simulation?

Tagged: 19, Flamelet Models, fluent, fluid-dynamics, Species/Reactions
    • April 5, 2023 at 2:32 pm
      FAQFAQ
      Participant

      You can shortcut some of the steps of dealing with flamelet setup files. This is particularly beneficial when flamelets or PDF files take a really long time to generate. NOTE: If you have a brand new mesh and no previous setup for a flamelet/PDF run, you will need your flamelet file from you previous simulation. 1. Once you have loaded the mesh for the new combustion case, turn on turbulence modelling, and activate the species model. 2. Set the Species Model option to Partially Premixed combustion and select flamelet or FGM 3. Under the Chemistry tab you will see an option to Import a flamelet file. Use this to load your previous flamelet file. 4. Apply this change and close the Species Model window. There will be a warning to create or load a PDF file 5. Go to file > Read PDF to bring in the previous PDF mixture that has all the species information. **Make sure that it is the one that was generated from the flamelet that was loaded** 6. If you have upgraded to a newer version of Fluent, you may be prompted to regenerate the PDF, but this is not necessary in order to run the case.

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