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In examples at cylinder3d

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  • July 25, 2023 at 8:39 am #7673
    Yuji
    Participant

    Dear all,

    Now, I am using the example in examples/laminar/cylinder3d.
    I replced re = 50 to re =100. The reults at outlet were starting oscillation and got divergence.
    Following the commnetout in cylinder3d.cpp, it must appear Karman vortex.
    What is wrong?

    Best,
    Yuji

    July 25, 2023 at 10:42 am #7674
    mathias
    Keymaster

    Hi Yuji,

    as in the spring school example cavity2d with the higher Reynolds number, you need to choose a finer resolution for stability. The stability condition is as indicated in the book of Krüger et al.

    Best
    Mathias

    July 27, 2023 at 6:31 am #7681
    Yuji
    Participant

    Dear Mathias,

    Thank you for your replying. I am going to read at section 4.4 in the LBM book of Krüger et al.

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