Problem with multizone method for Piston/Valve tutorial
 

Dear All,

I try meshing Piston/Valve Assembly tutorial using multizone method.
However, when I use 2D surface blocking, I cannot generate surface mesh of PORT near Cylinder and GROUP (STEM+VALVE+SEAT).

I realize that surface of PORT include 2 types (Faceted Surface and B-Spline Surface).

The part of B-Spline surface cannot be meshed with 2D surface blocking.

I also try to convert B-Spline surface to faceted surface but it is impossible.

Do you have any advice for me to solve this problem?

Thank you in advance.