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