Hello GUICAD
There is one video on Discovery AIM demonstrating how to define velocity at a function of radius. Below is the link to this video. You can check if similar logic can be applied for defining temperature as a function of distance.
ANSYS AIM Expressions: Custom Results Variable, Boundary Conditions, Location Selection
Discovery doesn’t have this capability as of now. The other Ansys product which you can check out is Ansys Fluent.