[jyh3134]

Hi all,

Recently, I'm studying a heat exchanger.(pic1)

I made a simple model for test(pic2),
but real model has lots of interior cylinder(over 300)

I managed to generate middle side of heat exchanger using hexa blocking,
but could't deal with inlet section due to complexity.
So I decided use tetra mesh in inlet section.
I want to use internal topology instead of full tetra mesh, so I bring a portion of hexa mesh.(pic3)

It would be very useful if I can generating new unstructured mesh by merging with existing mesh.

Please anyone who know how to generate 2nd mesh, or inform practicality.

Thank you.

Best@Regards