[agustinvo]

Hi,

I'm meshing this geometry: a duct which has inserted a twisted tape. I've designed the volumes, meshed the fluid and the twisted tape with cooper scheme (hex/wedge cells).

The problem is the duct mesh: because of the rotation of the tape (and fluid and inner face of the duct), at the moment of mesh with cooper scheme, as the nodes of the destiny source face have rotated, it happens that outer cells don't rotate, they are meshed along the axis, but inner cells have rotated, in order to link the pairs of corresponding nodes due to twist angle; and this fact produces a growing number of cells with skewness>0.97, and negative volumes.

I've meshed using TGrid, but I'd prefer cooper scheme. Do you have any idea how to do it?

I'll attach a photo with my problem as faster I can. Thanks!