Help – Computational Fluid x-Dynamics (CFxD)

Solution → Convergence graph

Track solver residuals to assess how well the discretized equations are being solved.

Run or resume the solver and inspect the Convergence graph.
Look for falling residuals and stable trends; compare them with monitored physical quantities and mass or heat balance.
Disable Autoscale to inspect a fixed graph range with manual zoom or pan.

Input or value	Meaning	Units
Residuals	Equation residuals reported by the solver.	Solver-scaled values
Horizontal axis	Iteration or solver time according to the case.	Read the graph label

Small residuals alone do not prove physical accuracy, mesh independence, or a closed mass or energy balance. Review the imbalance and monitoring data as well.