vamseeachanta Error Propagation: Where Things Break
Error Propagation: Where Things Break
| Stage | Common Failure | Propagation Effect | Detection |
|---|---|---|---|
| Mesh | Panel normals reversed | All forces inverted in diffraction | Heave RAO → -1.0 at long period |
| Mesh | Panel size too large | Missing high-frequency response | RAOs truncated above mesh cutoff |
| Mesh | Waterline not closed | Infinite hydrostatic forces | Diffraction solver diverges |
| Diffraction | Wrong heading convention | RAO phases off by 180 deg | Vessel moves opposite to waves |
| Diffraction | No viscous damping | Unrealistic resonance peaks | Roll RAO > 50 at natural period |
| OrcaFlex import | Coordinate system mismatch | Forces applied at wrong location | Vessel spins or drifts wrong way |
| OrcaFlex | Missing QTF data | No slow-drift motion | Mean offset too small |