[Bollonga]

Hi everybody,

I'm meshing a three blade wind turbine and some blocking located at the blade tip are causing me trouble.
In the 1st picture you can see the blade tip with sharp trailing edge and its blocking. There are O-grid blocks around the blade and then all edges converge to a unique vertex in the very extreme of the tip + O-grid distance (vertex 624).
In the message box you can see that a collapsed edge is causing an internal error. This is causing negatives volumes as it is shown in the histogram (negative volumes for the same point of view are shown in the 2nd picture).

How can I avoid that?

Is there a better option for blocking at the blade tip?

Thanks in advance!