Schiffsformoptimierung unter Verwendung numerischer und experimenteller Techniken in der Praxis

Summary

The paper describes the increasing application of numerical flow simulation in ship hull form design. It is shown that the application of potential flow calculations for the steady wave making prediction has substantially decreased the number of bulbous bow variations tested. The application of RANSE-solvers for the prediction of wake and viscous drag, the interaction between propeller, hull and appendages, as well as for the design of ap-pandages is also shown.

Also the application of numerical methods for the prediction of sea-keeping performance, especially with respect to slamming loads is explained.

Besides these numerical methods advanced experimental methods for the measurement of wake fields, for the alignment of shaft brackets and for propulsion and optimisation of rudder propellers (podded drives) are introduced. Beyond the great importance of experimental methods for power prediction, they are especially indispensible where complex interactions in dynamical processes are investigated like in manoeuvring, or for the determination of the ingress of water into the hold of hatch cover less container vessels.

Finally the authors express their view on the future development, including an estimate of the respective time frame.