Example 01_1_outdoor_airflow_2d.gh generates huge windspeed vectors

grasshopper butterfly
1

I’m new to butterfly - and trying to play with examples.
The outdoor airflow 2d example seems to yield incorrect wind speed vectors for me. In the range of 1e50.
Pressure values are also huge but when scaled for visualization the result looks believable.
I’m using Rhino 7, Butterfly 0.0.05 and blueCFD-Core-2017-2.
Rhino units are set to meters.

Any advice much appreciated. Script attached.

Vector values:
image

Pressure values:
image

Pressure visualization:

image
image958×265 3.77 KB

Untitled.3dm (155.9 KB)
01_1_outdoor_airflow_2d.gh (433.1 KB)

Bjorn