Theory 26/Offshore & Marine Engineering
Slamming Is a Deadrise Ratio
The claim
Slamming pressure on a hull is set by the ratio of impact velocity to the deadrise angle rather than by velocity alone.
01Mechanism
A blunt section entraps water and generates a high local pressure; as deadrise increases, the flow escapes and pressure falls.
02Predictions
- P1Pressure should collapse onto the ratio.
- P2Velocity alone should mispredict across hull forms.
03Refutation
Pressure tracking velocity would remove the geometry.