Diffraction Analysis Unit Conversion Traps

Fixed DOFs (e.g. heave/roll/pitch on TLPs) produce zero RAO magnitudes. Phase is undefined (atan2(0,0) noise), so:

• multi_solver_comparator.py: overrides phase correlation to 1.0 when peak_mag < 1e-10
• validate_owd_vs_spec.py: skips DOFs with max_diff < 1e-6 in pass/fail verdict

Benchmark Report Geometry Schematics

The build_mesh_schematic_html() in benchmark_plotter.py renders interactive 3D Plotly mesh visualizations. It requires mesh_path in solver_metadata. When using build_orcawave_metadata_from_yml(), propagate mesh_path from build_solver_metadata() base metadata — the enriched YAML metadata doesn't resolve mesh paths.

Mesh Quality Assessment

• Adjacent panel ratio (between neighbors) is the key metric — not global min/max area ratio
• Gradual size variation is acceptable even with large global ratio
• Report uses NOTE: prefix (informational) not WARNING: for area ratio
• Advanced metrics (Jacobian, aspect ratio, skewness) available via gmsh meshing tool