[ObiOne]

Hello, I have a very simple 2D problem in icem that i'm not able to solve.
Basically my geometry is divided in 2 parts: one that is always the same and the other one that changes, the one that changes though is a nozzle with different contours and although the shape is different it is always composed by inlet, outlet, wall and axis, furthermore the outlet which is connected with the non-changing gemetry is always the same so the interface between this two groups never changes.
picture1 and picture2 are a very simple schematic of the situation. The nozzle is first represented with a rectangular shape and in the second picture it has a sort of trapezoidal shape.

Now my question is this, if i mesh this two parts with the bloking strategy then i convert the pre-mesh and i created the "unstructured" mesh can i then join these two meshes?If yes how?Because I have been trying but fluent complains that there are two adiacent layers of element at the interface between the nozzle outlet and the inlet of the outer domain.
I also tried to mesh one complete geometry nozzle+outer domain and to save its blocking strategy and then i tried to copy this blocking strategy for all the other combinations but it didn t work.
Can you please help me?