_ ISSUE #1 WITH FEATURE REFINEMENT - Incorrect Sharp Angle Condition _
Since I have been forced to abandon the Hex Dominant Automatic Algorithm and start using the Hex Dominant Parametric Algorithm due to its more detailed control in creating yPlus layers, I have also been forced to learn how to use more Refinement types.
The ‘Feature Refinement’ has me pulling my hair out as I expect it to refine along surface edges that join other surface edges at ‘sharp’ angles. Doing so under the premise that if there is a ‘sharp’ angle, you most likely want to keep it defined in the mesh.
Under that premise, I am not getting the expected results.
I think I have narrowed the issue down to the fact that the Feature Refinement does just the opposite, it refines the mesh when the intersection angle of the surface edges are LESS ‘sharp’ than the included angle.
Here is the Help Pop-up pane:
If this graphically depicted angle defines the first edge that you want considered as ‘sharp’ then all edges that are that sharp or sharper would be GREATER than or equal to that angle, not less than.
My intuitive brain originally just ignored the words ‘less than’ and the resulting mesh I get when I use the defaulted angle of 150 degrees confused my brain. My geometry does not have any angles greater than 150 deg so my brain said the resulting mesh would be no different than without this refinement BUT all edges in the mesh were refined, even ones that are almost parallel.
What am I missing about this feature?
Without 150 degree Feature Refinement:
With 150 degree Feature Refinement: