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MAROFF-2-Maritim virksomhet og offsh-2

Propulsor/Hull Interaction. Efficiency, Cavitation and Noise

Tildelt: kr 10,4 mill.




2008 - 2011


With continuously increasing requirements with respect to reduced emission and environment friendly deliveries the industrial sector of shipbuilding is facing ever more stringent market demands for the accurate prognosis and good documentation of fuel con sumption, emission, reliability, cavitation, vibration and noise characteristics of propulsion systems. At the same time, new types of propulsion and manoeuvring systems are developed, these ranging from azimuthing thrusters with open and ducted propelle rs, via contra-rotating propellers, to integrated propeller/rudder arrangements. Experience with design and operation of such systems reveals significant gaps in knowledge about physics of the flow involved, especially as far as scale effects, dynamics lo ads and cavitation on propulsors and their interaction with ship hull are concerned. In the new "Propellkamaratene" project we will continue the sucessful cooperation from the last 3-4 years in order to fill the gap and enable us to design propulsion sy stems adapted to the given ship hulls, and predict their hydrodynamic, vibration and acoustic characteristics in a wide range of operation conditions. The solution to these problems is seen in rational combination of advanced experimental techniques and n umerical methods, especially those offered by Computational Fluid Dynamics (CFD) which is a fast developing area with remarkable potential for modeling full scale flows dominated by viscosity. International cooperation with outstanding R&D institutes in China,Russia and Italy is estblished.


MAROFF-2-Maritim virksomhet og offsh-2