[MaryBau]

Hi everyone:

I am doing a wind simulation over complex terrain. I did a precursor simulation over flat terrain to generate the inlet for the successor complex terrain simulation. So the inlet in the successor simulation is defined as timeVaryingMappedFixedValue.

I generate the complex terrain mesh with a *.stl file of the terrain. Because of the terrain features, the inlet in the successor mesh does not match perfectly the precursor simulation plane. I think that is causing me some instabilities as seen in the picture.

Does anyone know how can I either:

-create a buffer zone upstream of my successor mesh to perfectly linked it to the precursor? I tried mergeMesh and then stichMesh but there is a big offset and it does not work (as the second pic shows).

-or how can I modify my stl file (smoothing it in the upstream direction) to get a good inlet?

-or any other suggestion?

Thanks a lot!