Well, i have a problem with the orientation of a basket, meshed in midplane. Initially, i resolved a problem with free edges, in the internal section of a the part (i post this in other thread: http://forums.autodesk.com/t5/Autodesk-Simulation-
1. I do know how i can reduce the number to zero. It`s possible can`t reach zero for certain geometries?
2. It`s possible run the analysis with this numbers? what drowbacks could be? these 32 elemets can be negligible?
Here, a leave a Orientation Diagnostic Diplay, text, and the Mesh Statistics of the part.
What I would do, since it is a midplane mesh and the ribs are located on one side of the mold, is to put all those rib elements on a different layer, select them and with the right mouse click go into properties, and on Mold Properties, assign the Top AND Bottom sections accordingly to where they belong in the real life parts.(cavity or core).
Orientation should be zero for Dual domain meshes, but for midplane due to the ribs nature, I don't think you can reduce this variable to zero, but manage the elements correctly, that's all you can do.
Hope it helps, Good luck!