Complex 3D grid Refinements

Dear all,
I am currently working on the refinement for a 3d Jet simulation. I tried to obtain the following grid refinement using the 3d grid refinement example:

However, after the refinement process, I get something much less detailed (lateral view of the “cone” refinement:
Screenshot from 2020-07-01 00-49-08

Is there any way to obtained more detailed 3d grid refinements (with “complex” shapes such as cones or the shape below)?

Thank you very much for your attention.

You need to define a more detailed grid density.

You may find useful explanations here:


Thank you very much! Your response was very useful for finishing my Bachelor Thesis!

great. do not hesitate to share it!