Thank you mahmed
The problem is that I can see the mesh and the size of the disk used after the simulation ends. During the simulation when I check the computing resources used by the different programs the ANSYS is using only 30% and is not increasing this confuses me a lot.
The second question is that now I am using the lower mesh density but the simulation is not completing at all. it seems it is running forever. its more than 2 days and is running. I am not using a frequency sweep, it is just a simulation at a single point and no adaptive passes. Any idea.?