Harshvardhan
Ansys Employee

Hi,
You can use the shrinkwrap option to smoothen out features and then use smooth option.
For an example for Topology Optimization you kindly go through the following link:
Topology Optimization of a Bell Crank| Ansys Innovation Courses  

The example in the link covers the steps required to use the optimized geometry for further analysis.

Regards.
Harshvardhan