A good distribution of the ship wake from upstream plan, parallel to propeller, can lead to better propulsion ability and also to a reduced propeller cavitation (Ghose & Gokarn, 2004).
A modern ship hull lines are designed to minimize the forward resistance, to reduce the propeller cavitation, to improve the propulsion performance and to increase the global hydrodynamic stability.
Finally, the most important, until now, proved result, is the reducing of propeller cavitation (working in the simulated nominal wake of the hull using the new stern hydrodynamic concept- it can be remarked lack of cavitation--figure 3).
Extensive correlation experience led the David Taylor Model Basin to target a standard Reynolds number goal for propeller cavitation testing of around 5 million based on the propulsor rotor chord and resultant velocity at the 0.
4]); propeller cavitation performance evaluation of a twin-screw combatant ship; wake characterization of a single-screw surface ship; hydroacoustic performance of a submarine; and hydroacoustic performance of a research torpedo.
Rolla's technology includes: performance and power prediction of both planning and displacement craft, propeller design and manufacturing, estimation of complete hydrodynamic characteristics of the propeller geometry, and propeller cavitation
characteristics through exclusive lifting surface and CFD panel method programs.