The objective of the project was to compute the evolution of a power engine comparing different hydrostatic trim conditions of a vessel (the KCS geometry was used).
The displacement was kept constant, while the trim varied in such a way that each initial trim corresponded to a specific distribution of the load. Different displacements and speeds were computed for each initial trim value.
NUMECA's FINE™/Marine software suite was used to run around 150 CFD simulations. The new C-Wizard trim optimization mode was used to automate the mesh generation and set-up of the computations.
At the end of the calculations the efforts and the wake coefficient were extracted from the CFD solutions. Trim curves showing the evolution of the initial trim power were given for several speeds and displacements.
The pictures above show different initial trim positions of the ship, a comparison of the free surface for two different trim values and the plot of the power engine variation with the initial trim.