I am running a natural ventilation study of a house (9x9x3m), which was modeled as an Outdoor case. BF geometry has 4,4 values for the refinement levels.
The wind tunnel data comprises 44.97 * 82.21 * 18.20::dir (0.0 1.0 0.0)::1.100 m/s
I used tunnel grading, the blockage ratio is below 3% and snappyHexMesh settings follow the example file of the Natural Ventilation study from the Webnar: OpenStudio CFD training using butterfly.
However, when checking the mesh in Paraview, the edges are not orthogonal and the max value when checking for non-orthogonality is 60,32 with an average of 11,24.
(It seems a good value would be around 50, although the default max value from BF is 60 and I can`t find a way to change it)
I’ve tried different settings, but I don’t seem to be on the right track.
Could someone help me to get a good mesh, please?