Answer:
In the background, the profile of the turbulence intensity over the altitude is a pure factor function depending on the altitude. When multiplying the altitude-dependent factors by the entered turbulence intensity, the turbulence intensity profile applied at the wind tunnel entrance results.
The generic turbulence intensity profiles from the RFEM 5 or RSTAB 8 environment are each referenced to the bottom edge of the wind tunnel. Therefore, the factor function at this ground location has the value of 1, and thus defines the unmodified input value of the turbulence intensity at this location. At a higher position with a factor ≠ 1, the turbulence intensity input multiplied by this factor is applied accordingly.
