Rudder bulb as retrofit

Advanced CFD calculation on Propeller and Rudder Bulb as retrofit solution on Combi-ferry

By use of advanced RANS CFD the flow in the stern region of the vessel is investigated. The flow study is made to optimise the interaction between the propeller, hull and rudder. Based on a complete 3D definition of the propulsion setup the alignment of the rudder and brackets are checked. Based on the original settings with the propeller geometry included, different rudder bulbs are designed and the overall performance are evaluated using RANS CFD. Further a new propeller and hub design will be made and evaluated as well.

The initial investigations show a good potential a reduction of the power consumption.