ANSYS FSI Simulations in Linux
 

It appears the tutorials involving FSI and the System Coupling Service are all written for an audience running in a Windows environment. Looking through the aisol directory under my ANSYS v15.0 installation I don't see anything related to the Ansys.Services.SystemCoupling executable specified to launch the coupling service under Windows from a command line. Is this functionality absent under Linux? If not, how would one launch a 2-way coupled FSI simulation from a shell prompt?

On the ANSYS Customer Portal, go to Knowledge Resources > Tutorials and Training Material then search for "Fluent FSI". You should find the training material "Fluid-Structure Interaction (FSI) with ANSYS Fluent 14.5" which includes a section for running on Linux. The Workbench documentation has a bit too, under Workbench > System Coupling Users Guide > Workflows for System Coupling > Executing System Coupling from the Command Line.

You might have already figured it out but just in case, try the following

/share/apps/ansys/16.1.0/v161/aisol/.workbench -cmd ansys.services.systemcoupling.exe and then define the input .sci file along with this command