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Irreal U and k on bottom boundary and free surface

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Old   April 14, 2020, 04:59
Default Irreal U and k on bottom boundary and free surface
Grivalszki Péter
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I have noticed, that my U and k values in my boundaries are not optimal. I have a water-air multiphase case, in a flume, with an obstacle.

- First of all, I use noSlip boundary condition on the bottom, so velocity should be 0.... but it isn't. Why? How can I solve this?

- Then, my k values are false on the free surface. Theoretically, it should be low on the surface and it goes higher towards the bottom. In my case, k on the surface is irreally big... (I used logarithmic scale for better view)

Thank you in advance!

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File Type: jpg k_HIBA.jpg (30.6 KB, 4 views)
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bottom boundary, free surface, irreal, kqrwallfunction, noslip

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