Review the Sum values recorded for the Force transfer in the final coupling iteration to verify that the forces sent by Fluent match those received by Mechanical.
Figure 44: Force at Coupling Step 100, Iteration 4
+=============================================================================+ | COUPLING STEP = 100 SIMULATION TIME = 1.00000E-02 [s] | +=============================================================================+ +=============================================================================+ | COUPLING ITERATIONS | +-----------------------------------------------------------------------------+ | | Source Target | +-----------------------------------------------------------------------------+ ... +-----------------------------------------------------------------------------+ | COUPLING ITERATION = 4 | +-----------------------------------------------------------------------------+ | MAPDL Transient | | | Interface: CouplingInterface 1 | | | Force | Not yet converged | | RMS Change | 2.29E-01 1.43E-01 | | Sum x | 7.05E-04 7.05E-04 | | Sum y | 7.13E-04 7.13E-04 | | Sum z | -1.02E-15 -1.02E-15 | +-----------------------------------------------------------------------------+