The client-server model used in STAR-CCM+ lets you start running a simulation, disconnect the client from the running server, and then reconnect at a later time to check on results. This is useful for freeing some of your machine's computing power, so that you can perform your other tasks with different software while the STAR-CCM+ server continues to solve your problem. You could also reconnect from a different machine if you wish, even a machine of another architecture. So you could run a client on a Windows machine connected to a server running on a Linux machine.
To disconnect the client from the server, select the Servers window of the Explorer pane and see your simulation listed there.
Reselect the simulation window in the Explorer pane, and select the File > Disconnect menu item.
This will disconnect the client from the server, but both will still be running, although you will no longer see the simulation window in the client. You could use the File > Exit menu item to shut down the client at this point if you wanted to.
The Servers window of the Explorer pane lists all server processes (simulations) that are running locally.
Selecting the node in the tree will display the server process properties in the Properties window.
If the Clients property is empty (as shown above) then that server process does not have a client connected to it and you may connect.
Do this by right-clicking on the server process node in the Servers tree and selecting Connect from the pop-up menu.
When you reconnect, none of the previously created scenes and plots are displayed in the Graphics window. To display a scene of interest, simply double-click on its node in the simulation object tree, or right-click on the node and select Open.