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Comparative analysis of the hydrodynamic performance of untwisted and twisted rudders using a hybrid RANSE/BEM model

Danilo Calcagni ; Flavia Bellotto ; Riccardo Broglia ; Francesco Salvatore ; Rickard Bensow (Institutionen för sjöfart och marin teknik, Marine Design)
ISOPE-2014: The 24th International Ocean and Polar Engineering Conference (1098-6189). p. 674-682. (2014)
[Konferensbidrag, refereegranskat]

Results of a computational study on the hydrodynamic perfor- mance of twisted and untwisted rudders for a single screw vessel are presented. Ship flow simulations are performed by using a hybrid RANSE/BEM model. Numerical predictions by RANSE and BEM solvers are validated through comparisons against ex- perimental data for the ship considered in the study. The com- parative analysis of untwisted and twisted rudders is carried out by fully–appended ship flow simulations at uniform ship speed and rudder angles between 0 and 20 degrees. Numerical results predict comparable manoeuvring capabilities for the alternative layouts, whereas the twisted design allows to mitigate negative pressure peaks observed on the untwisted rudder surface over a range of helm angles.

Nyckelord: Ship hydrodynamics; propeller–rudder interaction; twisted rudder; Hybrid RANSE/BEM model

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Denna post skapades 2014-08-19. Senast ändrad 2014-09-16.
CPL Pubid: 201614


Institutioner (Chalmers)

Institutionen för sjöfart och marin teknik, Marine Design (2012-2014)


Hållbar utveckling
Innovation och entreprenörskap (nyttiggörande)

Chalmers infrastruktur

C3SE/SNIC (Chalmers Centre for Computational Science and Engineering)