Currently used design tools and methods for ship propeller design are not able to predict the effects of scientific phenomena like cavitations, vortices and propeller hull interaction, some of these phenomena are not completely understood. For this reason current propeller designs cope with technical problems like erosion of the blades, noise, vibrations and efficiency loss and finally loss of power.
To gain improved scientific knowledge of cavitations, vortices, propeller hull interaction and off design behaviour and the translation into mathematical models, leading to safer, more reliable ship propellers, resulting in safer vessels and less accidents at sea.
Research A. Research into the mathematical modelling of cavitations and vortices along the propeller blades. Parameters that contribute to the phenomena of cavitations and vortices in propulsion.
Mathematical modelling B. Research into propeller hull interaction and off design conditions. Scaling of the flow from model to full scale, the effect of propeller suction on the incoming flow, the relevance of the presence of the rudder, investigation of off design conditions such as shallow water effect, steering effect, turning the ship, bad weather conditions.
(1) Test, simulation and calculation results.
(2) Technical knowledge of the parameters which cause cavitations and tip-vortices .
(3) Mathematical models of cavitations and vortices, based on validated data.
(4) Reliable software tools for propeller design;
(5) Insight in the technical possibilities viscous CFD offers for rotating devices;
(6) Recommendations and examples how CFD tools can be applied to propeller hull interaction and to investigate off design conditions.