Reply To: Run ansys on multiple nodes

[MangeshANSYS]

Since you already have an ARC cluster setup, then you can use Ansys RSM to run on multiple computers simply by launching Fluent through Workbench and setting solution to be sent to Ansys RSM using the number of cores you need to use.

please refer to these links below

Firstly configure RSM client
https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v241/en/wb_rsm/rsm_clus_config.html

I am assuming you are familiar with starting workbench 

add a desired Anslysis system
https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v241/en/wb2_help/wb2h_addsys_drag.html

Submitting Solutions to Remote Solve Manager 
 https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v241/en/wb2_help/wb2h_submit_solutions_rsm.html