CFD Validation That Means Something

A beautiful CFD contour is not evidence that a simulation is correct.

This 44-page professional handbook explains how to distinguish numerical convergence, conservation, reproducibility and physical validation instead of collapsing them into one vague PASS label.

Topics include residual convergence, residual reduction, continuity behaviour, mass-flow imbalance, monitored engineering quantities, solver and model provenance, configuration identity, mesh and timestep independence, benchmark comparison and validation boundaries.

Worked examples show why a simulation can legitimately pass convergence and mass-balance checks while mesh independence or physical validation remain NOT TESTED.

The book is designed for CFD engineers, consultants, students, reviewers and anyone receiving simulation results from another person or system. It also reflects the evidence-governance principles used by POLYMATHICA and VortX.