Running outdoor wind case with SouthEast wind


I was trying to run a outdoor case with SouthEast wind (155 degree). I rotate the wind direction then get an error message like below:

Runtime error (AssertionException): Invalid input: 1.44
line 112, in init, “C:\Users\fedra_analysis\AppData\Roaming\McNeel\Rhinoceros\5.0\scripts\butterfly\”
line 290, in calculate_grading, “C:\Users\fedra_analysis\AppData\Roaming\McNeel\Rhinoceros\5.0\scripts\butterfly\”
line 57, in script

The change I did is as follow:

Can anyone help on this?


Hi @Bing

I would suggest instead to rotate your geometry accordingly and not the wind tunnel. The gradient probably fails cause it is done in the x,y,z directions which are now in an angle with the wind tunnel (guessing here).

But generally I find it’s best to keep the tunnel static and rotate your geometry.

Kind regards,