Orcawave Analysis Diffractionspec Specyml Conventions

DiffractionSpec Conventions (spec.yml to OrcaWave)

DiffractionSpec Conventions (spec.yml to OrcaWave)

The DiffractionSpec schema (input_schemas.py) is the canonical input format. Key conventions:

Unit Handling:

• Spec stores pure SI (kg, m, s, kg.m^2)
• OrcaWaveBackend divides mass, density, inertia by 1000 for OrcaFlex-SI (te)
• EXCEPTION: external_damping and external_stiffness 6x6 matrices pass through without conversion -- values must already be in OrcaFlex-SI units

Mesh Paths:

• mesh_file is relative to the spec.yml directory
• Runner copies mesh to output dir; backend strips to filename via Path().name
• Known issue: _MESH_FORMAT_MAP maps dat to -- AQWA .dat meshes need but the enum lacks this variant