To start a new simulation select File > New Simulation... from the menu bar to open the Create a New Simulation dialog.
STAR-CCM+ is a client-server application with the client (user interface or batch interpreter) running in one process, and the server (the solver) running in another process. Using the settings shown in the previous dialog will start a new server process on the same machine as the client.
Ticking the Remote Server checkbox would allow you to start the server process on another machine. The client and server can run on machines of different architectures, and the server can also be run in parallel mode. When running a parallel server, the controller and worker processes must all execute on a set of homogeneous machines.
Once you click OK in the previous dialog, a new window containing a simulation object tree will be created in the Explorer pane with the name Star 1. The initial folder nodes for this simulation are shown below. Other nodes will be added to the object tree as you progress further.
As the new simulation is created, a window named Output will appear in the lower-right portion of the STAR-CCM+ workspace. The Output window describes the progress of actions in the simulation.