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A procedure for optimizing cavitating propeller blades in agiven wake

Kaijia Han (Institutionen för sjöfart och marin teknik, Hydromekanik) ; Göran Bark (Institutionen för sjöfart och marin teknik, Hydromekanik) ; Lars Larsson (Institutionen för sjöfart och marin teknik, Hydromekanik) ; Björn Rengström (Institutionen för sjöfart och marin teknik, Hydromekanik)
8th Numerical Towing Tank Symposium (2005)
[Konferensbidrag, refereegranskat]

The blade geometry of a cavitating propeller in a given wake is optimized to maximize propeller efficiency and minimize propeller induced pressure fluctuations. The Keller criterion, the cavity volume and other constraints are considered in the optimization process. Such constraints are cavity area, cavity length and face side pressure and they are switched on separately or simultaneously to investigate their influence on cavitation and efficiency. Optimization is made starting from a near optimum propeller as well as from an off-design propeller. Results indicate that the present optimization technique can yield higher efficiency and lower pressure amplitude with tolerable cavitation for a cavitating propeller in a given wake.

Nyckelord: Dynamic Hill Climbing, Keller Criterion, pressure fluctuation, cavity area, cavity length, face side cavitation



Denna post skapades 2007-01-16. Senast ändrad 2015-05-08.
CPL Pubid: 11792

 

Institutioner (Chalmers)

Institutionen för sjöfart och marin teknik, Hydromekanik (2005-2011)

Ämnesområden

Strömningsmekanik

Chalmers infrastruktur