Comparative analysis of the hydrodynamic performance of untwisted and twisted rudders using a hybrid RANSE/BEM model
Paper in proceedings, 2014

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.

propeller–rudder interaction

Hybrid RANSE/BEM model

twisted rudder

Ship hydrodynamics

Author

Danilo Calcagni

Flavia Bellotto

Riccardo Broglia

Francesco Salvatore

Rickard Bensow

Chalmers, Shipping and Marine Technology, Division of Marine Design

ISOPE-2014: The 24th International Ocean and Polar Engineering Conference

1098-6189 (ISSN)

674-682

Driving Forces

Sustainable development

Innovation and entrepreneurship

Areas of Advance

Transport

Energy

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

Subject Categories

Vehicle Engineering

Fluid Mechanics and Acoustics

ISBN

9781880653913

More information

Created

10/7/2017