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Yplus

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› Forums › on OpenLB › General Topics › Yplus

Viewing 3 posts - 1 through 3 (of 3 total)
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  • October 31, 2025 at 4:45 pm #10918
    MohammadAli_Daeian
    Participant

    I have a question regarding calculating yplus in the code.

    In the aorta example, the yplus is using the material number 3 for calculating yplus, which means calculating yplus on the inlet boundary, which is weird.

    When using my own aorta geometry with a different STL file, and when I use material number 2, the function does not seem to work for some geometries and spatial resolutions, which is weird.

    Also, is there any robust way to add yplus as a 3D parameter which could be visualized in vtk file? I have tried this, and again it works only for some cases.

    November 3, 2025 at 10:10 pm #10928
    FBukreev
    Keymaster

    Hi, you can try to apply the wall model to aorta and it will calculate y distance and u_tau. Then in Paraview you can visualize both fields and calculate y+ from them, or create a new lattice functor which takes these values from external fields and calculates y+.

    November 3, 2025 at 10:11 pm #10929
    FBukreev
    Keymaster

    Hi, you can try to apply the wall model to aorta and it will calculate y distance and u_tau. Then in Paraview you can visualize both fields and calculate y+ from them, or create a new lattice functor which takes these values from external fields and calculates y+.

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