You will need to manually split the faces (assuming it is a 2D model, if it is 3D, you will need to manually split the solids) and use face sizing to get mapped mesh.
How to access Ansys help links
Guidelines for Posting on Ansys Learning Forum
Splitting the faces will give you a good structured mesh.
If you can please use inflation and tri mesh.
How to access ANSYS help links
Ansys customers with active commercial software licenses can access the
customer portal and submit support questions. You will need your active account number to register.