AmesimKnowledge

1d-3d-cae

Support for Simcenter Amesim Platform features in the context of 1D/3D CFD co-simulation

Segment Category Feature Supported? Notes
Platform Simulation types Dynamic simulation ✓ Co-simulation makes it possible to conduct unsteady CFD simulations with realistic boundary conditions provided by Simcenter Amesim.
Support for strong as well as weak coupling ✓ For 1D users, strong coupling is possible (using direct co-simulation), but also weak coupling (cascaded systems, static characterization, etc.)
Run parameters Initialization ✓ Both software packages can carry out static runs in order to feed initial data, before starting a dynamic simulation.
Continuation run o Must be done manually for Simcenter Amesim and CFD. Simcenter Amesim simulation can be re-started using the last values exchanged with CFD - however, the CFD package may not have kept a record of the previously generated simulation data (i.e. the previous state of its model).
Stabilizing run - Only possible in Simcenter Amesim, CFD does not allow stabilizing runs.
Discontinuity handling ✓ Each solver integrates up to a given point in time - as both solvers accept discontinuities, they are supported (but discontinuities are unusual in fluid dynamics).
1D-3D associations Easy meshing ✓ Using dedicated meshers for CFD (ANSYS ICEM, etc.)
Automatic 1D-3D association ✓ "UserCosim" interface block - or specific GUI based on Generic Co-simulation library for STAR-CCM+
Automatic link to CFD mesh ✓ Linking the CFD mesh to Simcenter Amesim variables can be done using the interface-specific code.
Results and post-processing Access to results in 1D plots ✓ All CFD results exchanged at the ports of the interface are available to plot inSimcenter Amesim (including 1D variables: velocity, pressures, etc.). In addition, all Simcenter Amesim variables can be plotted in Simcenter Amesim.
Access to CFD results in 3D scene ✓ CFD software packages natively support 3D representation of results.
Color maps/contour plots ✓ See above - also true for 2D representations.
Analysis tools Linear analysis Performance analyzer Spectral analysis etc. ✓ Only available on the Simcenter Amesim side.

Source: https://docs.sw.siemens.com/en-US/doc/254352342/PL20250521841123434.amesim_collection.CFD_Methodology/xid1178825 · retrieved 2026-07-17