As a conclusion, we can say at first that ICEM is a mesher which needs a lot of investigation.
To correctly mesh a cylinder is not as easy as it seems. We could not use our meshing cylinder with solver as Fluent 5.0 or StarCD, and the reason why comes from bad geometry or bad meshing.
Moreover, rectangular geometry seem to be easier to create and to mesh than revolution one.

ICEM has been performed preferently for specialist ingeneers and not for generalist ones.