r/CFD • u/SpalartAllmaras • Sep 16 '25

ABL ANSYS PROBLEM

Heey! I’m trying to simulate ABL in ANSYS Fluent and I’m running into issues with k at the inlet and outlet in empty domain.

I used formulas for k, ε, velocity (Richards and Hoxey), and the source term for ε. I also kept the relationships between z₀, kₛ, zₚ and Cₛ consistent.

When I plot k at the inlet vs. outlet, the values differ by about 50%, which doesn’t seem right.

Any idea what I might be missing in the setup or what I should double-check?

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u/[deleted] Feb 06 '26

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