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# les-ras
  • c

    cbose1991

    06/11/2020, 7:49 PM
    as it is averaging the eddies
  • l

    Lookid

    06/11/2020, 7:49 PM
    and so I tried in 2D, WALE gave the best from what I tried. Smagorinsky was robust and gave results, but much lower frequency than the experimental one all the dynamic models crashed
  • c

    cbose1991

    06/11/2020, 7:50 PM
    I dont know much about these models
  • c

    cbose1991

    06/11/2020, 7:50 PM
    Can you suggest a test case?
  • c

    cbose1991

    06/11/2020, 7:50 PM
    Did you try DDES
  • c

    cbose1991

    06/11/2020, 7:50 PM
    ?
  • l

    Lookid

    06/11/2020, 7:50 PM
    no
  • l

    Lookid

    06/11/2020, 7:51 PM
    https://www.ntnu.edu/nvks/f99-test-case3
  • l

    Lookid

    06/11/2020, 7:51 PM
    the final goal was to do FSI on it.
  • l

    Lookid

    06/11/2020, 7:52 PM
    and weirdly, the fluid part was the problem 😄
  • l

    Lookid

    06/11/2020, 7:52 PM
    2D FSI worked well, it would have most likely worked in 3D also. It was just too time consuming for the time I had
  • c

    cbose1991

    06/11/2020, 7:52 PM
    hmm
  • c

    cbose1991

    06/11/2020, 7:53 PM
    Do you have the simulation test case?
  • l

    Lookid

    06/11/2020, 7:53 PM
    eeeeeeh
  • l

    Lookid

    06/11/2020, 7:53 PM
    i have probably 500 of them
  • c

    cbose1991

    06/11/2020, 7:53 PM
    ha ha
  • c

    cbose1991

    06/11/2020, 7:53 PM
    Which version of OpenFoam?
  • l

    Lookid

    06/11/2020, 7:54 PM
    then again, it's also about the boundary condition. I never managed to make the good_inlet_bc_that_i_forgot_the_name work
  • c

    cbose1991

    06/11/2020, 7:55 PM
    Okay
  • c

    cbose1991

    06/11/2020, 7:55 PM
    I want to run for uniform flow only
  • c

    cbose1991

    06/11/2020, 7:55 PM
    to start with
  • l

    Lookid

    06/11/2020, 7:55 PM
    if you didn't read this channel, you should go up
  • l

    Lookid

    06/11/2020, 7:55 PM
    it's not long and some things might interest you
  • c

    cbose1991

    06/11/2020, 7:56 PM
    sure
  • c

    cbose1991

    06/11/2020, 7:56 PM
    🙂
  • l

    Lookid

    06/11/2020, 7:56 PM
    also, there is this GIGO rule in CFD (Garbage In - Garbage Out), it's even more true with LES
  • l

    Lookid

    06/11/2020, 7:56 PM
    you need a very good mesh
  • l

    Lookid

    06/11/2020, 7:56 PM
    in term of everything
  • c

    cbose1991

    06/11/2020, 7:57 PM
    Can you share a tutorial case with me? So that I try to understand the parameters.
  • c

    cbose1991

    06/11/2020, 7:57 PM
    I agree that mesh plays a key role in turbulent simulation
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