[Lancez]

Hello, I am a beginner in Ansys Fluent. My geometry is 6 cyclists lined up one behind the other in a straight line inside an enclosure, as shown in the image below.







My task is to determine the Drag Force acting on each of the cyclists, given an airflow travelling in the positive x direction, into the inlet and exiting the outlet. The other four sides of the enclosure are walls.

My approach would be to create a named selection for each cyclist, and then later create a Drag Force report for each named selection. Is this approach correct?
If so, should named selections be made for each cyclist Part? Or should boolean subtraction be performed first so that only the interfaces between the enclosure and each cavity are named selections?

In DesignModeler, I have tried boolean subtracting the 6 cyclist Parts from the enclosure, but doing this created a single Part with 6 cavities inside which are difficult to select.
I have read through multiple questions on the forum and other resources, but I still do not know what to do. Any guidance would be very much appreciated. Thank you.