I am trying to create a solid mesh of elements that connects two surfaces (an inner surface of a cylinder and an outer face of a cylinder). It it paramount that the inner and outer surfaces which have been meshed with a specific number of elements remain the same. Is there a way to select the inner 2D mesh and outer 2D mesh and create a mesh of elements that connects the two?
I have tried to include a picture of the two meshed surfaces with part of the model masked so that the inner and outer surfaces can be visualized.
Thank you for your help.

-Brad