The System Coupling User's Guide describes how to use the current version of Ansys System Coupling™ to direct two or more otherwise independent physics solvers and/or external data sources to work together in a coupled multiphysics analysis — for example, in a Fluid-Structure Interaction (FSI) analysis.
In addition to this guide, the following System Coupling documentation is available:
System Coupling Settings and Commands Reference provides a comprehensive listing of System Coupling's data model settings.
System Coupling Command Reference Guide provides a comprehensive listing of System Coupling's commands.
System Coupling Theory Guide provides some theoretical background for the algorithms, processes, and best practices used by System Coupling.
System Coupling Beta Features gives instructions for accessing and using the hidden features offered by System Coupling in the 2025 R2 release.
System Coupling Tutorials includes tutorials that provide guidance on using System Coupling, demonstrating its use in specific co-simulation applications.
System Coupling Participant Library documentation for System Coupling's C, C++, Fortran, and Python APIs is available on the Ansys Developer Portal site. It includes reference materials, examples, tutorials, and instructions on how to use APIs to connect independent solvers to a System Coupling co-simulation.
PySystemCoupling Documentation provides guidance on using PySystemCoupling, an interface that lets you use System Coupling within or alongside any Python environment, whether in conjunction with other Ansys Python libraries and packages or with other external Python products.