PRISM at different places
 

I try to make prism at the bed of the container, and around the pipe.

Attachment 14656

in the bed of the container, it is ok to be generated. but around the pipe, I can't get the prism layers. why it's like this? any method can fix it?

what i did is make the round surface to be prismed, like the bottom surface.
anything wrong?

THANKS!
HUIHUI

You could assign the internal surface of the hole as a PART, then set up the prism data in Part Mesh Set-Up (not forgetting to tick the prism check-box)?

Put the boundary lines and circle in different Part when you create them. Then, select the cylinder boundary and the bed boundary as Prism in Mesh -> Part Mesh Setup.
I selected just the STATOr-BLADE boundary in the picture attached to make it prism.