How to have structured mesh for the following geometry in 3D?

[Puhan]

Hello

I hope you are doing well.

I want to ask you how can I have a structured mesh for the following geometry.

There is an ellipsoid hole inside the cuboid

It can be hex or tet either, but I want to partition in such a way that I can have a structured mesh.

I will be grateful, let me know, please. Thank you very much.

With regards
Biswabhanu Puhan

 

[Puhan]

hello
I am able to partition it and reached as following, the only two regions I want to have structured or sweep, please let me know.

Regards
Biswabhanu Puhan