Some typical CFD seakeeping calculations are:
- RAO’s: response amplitude operators
- Angular and linear accelerations for six degrees of freedom calculated in any point of the vessel
- Ship behavior in the vicinity of an offshore structure (windmill, platform…)
- Bilge keel design and roll damping analysis
- Parametric Rolling
Furthermore, the calculated forces and moments are typically used on offshore vessels to feed the Dynamic Positioning simulator for more accurate results.
The motion of a fluid inside a tank of any size can be coupled with the own ship motion, in such a way that sloshing problems can be addressed, this is a typical problem on gas carriers. This approach is also used to analyse stabilizer tanks, sizing and location.
By means of CFD, water ingress on deck known as “Green water” can be evaluated as a function of time, knowing probabilities of green water on a certain speed, course and sea state combination.
Slamming impacts can be calculated by CFD and used for structural evaluation of the fore body or comfort assessment.