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  1. Old Comment
    sbaffini's Avatar

    y+ calculator for equilibrium flows

    Quote:
    Originally Posted by aero_head View Comment
    This is great, thanks for sharing! Seeing these equations laid out in Excel helped me better understand the enigma that is the value of y+
    Thanks! However, note that, with respect to a classical y+ calculator (say, like this https://www.cfd-online.com/Wiki/Y_pl...nce_estimation), this one is peculiar in that, instead of using explicit formulas for the skin friction, it uses implicit ones (actually 3 different versions, one for each kind of flow), so iterations are needed in determining u_tau. But, besides this, it is identical to other y+ calculators.
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    Posted Yesterday at 04:24 by sbaffini sbaffini is offline
  2. Old Comment

    y+ calculator for equilibrium flows

    This is great, thanks for sharing! Seeing these equations laid out in Excel helped me better understand the enigma that is the value of y+
    permalink
    Posted January 13, 2021 at 19:59 by aero_head aero_head is offline
  3. Old Comment

    Ph.D. Thesis on LES

    Thank you for sharing the thesis
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    Posted April 21, 2017 at 15:17 by joemonjacob joemonjacob is offline
  4. Old Comment
    sbaffini's Avatar

    Useful LES tools in Fluent - Part 4

    I don't know if i understood correctly what you mean by two-way periodicity.

    If you mean to make the copied section aware of the main domain where it is copied, then it is not possible and does not make sense, because the copied section already has all the information it requires. You could instead simply define the copied section to be in the domain and not out of it (as some OpenFoamers use to do), but my experience is that such coupling is only detrimental to the stability.

    If instead you mean to apply it between multiple couples of faces, then you can simply compile different versions of the UDF, one for each couple of faces.

    Quote:
    Originally Posted by spoink View Comment
    Hi,

    this is a very nice tool! I have a periodic boundary condition which should handle translation and rotation. Your approach helps me already. However a real two way periodicity would be even better. Do you have a suggestion on that?

    Best regards!
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    Posted June 21, 2016 at 13:20 by sbaffini sbaffini is offline
  5. Old Comment

    Useful LES tools in Fluent - Part 4

    Hi,

    this is a very nice tool! I have a periodic boundary condition which should handle translation and rotation. Your approach helps me already. However a real two way periodicity would be even better. Do you have a suggestion on that?

    Best regards!
    permalink
    Posted June 21, 2016 at 08:08 by spoink spoink is offline
  6. Old Comment
    sbaffini's Avatar

    Useful LES tools in Fluent - Part 4

    You have 3 options:

    1) Open it with wordpad
    2) Open it under Linux
    3) Do "unix2dos remap_par.c" in a linux shell, then use it under windows
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    Posted November 8, 2015 at 14:09 by sbaffini sbaffini is offline
  7. Old Comment

    Useful LES tools in Fluent - Part 4

    Hi!

    Thank you for this work - it seems very interesting, and it could help me with my simulations. When I download the text file, however, the entire code appears as one big chunck of text. Could you maybe reupload the text file, where the code can be better understood or can you maybe just post the code somewhere on this website?

    Thanks in advance for your help!
    permalink
    Posted November 8, 2015 at 13:38 by TimotheusFlavii TimotheusFlavii is offline
  8. Old Comment

    Ph.D. Thesis on LES

    Thanks for sharing it
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    Posted May 12, 2014 at 04:26 by skeptik skeptik is offline
  9. Old Comment

    Lambda-2 criterion

    Great addition to community. Thanks for your valuable information. Please keep it up.
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    Posted July 1, 2013 at 14:33 by Far Far is offline

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