Vivek Praveen
Ansys Employee

Hello

I think if you can give an Ogrid split to the cylinder, it might help increase the quality of cells at the sides of the cylinder. 

For more information on creating Ogrid Split, please refer this video:

Also, you can refer the documentation here: Ogrid Block (ansys.com)

If you are not able to access the link, please refer to this forum discussion: https://forum.ansys.com/forums/topic/using-help-with-links/#latest