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Computation of Rudder Open Water Characteristics: Charles Darwin (H40)
Van Hoydonck, W.; Panahi, S.; López Castaño, S.; Eloot, K. (2024). Computation of Rudder Open Water Characteristics: Charles Darwin (H40). Version 3.0. FH reports, 17_025_1. Flanders Hydraulics: Antwerp. 13 + 2 pp. https://dx.doi.org/10.48607/261
Part of: FH reports. Flanders Hydraulics: Antwerp. , more
Computation of Rudder Open Water Characteristics: Charles Darwin (H40)

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Document type: Project report

Keywords
    Harbours and waterways > Manoeuvring behaviour > Open water
    Numerical calculations
Author keywords
    Open water rudder characteristics; CFD; Charles Darwin

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  • Rudder open water tests (CFD), more

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Abstract
    The objective of this report is to document the procedure to determine open‐water rudder characteristics  using the Computational Fluid Dynamics (CFD) software package FINE/Marine. In the current report, openwater  rudder characteristics for the vessel Charles Darwin are determined. The approach that is used here  follows a setup that is similar to what was reported in the past (Van Hoydonck et al., 2018), although now  with some simplifications: for the current setup, the domain consists of a single cylinder. A far field velocity  boundary condition is defined at the domain boundaries and the rudder rotation is imposed by rotating the  complete domain together with the rudder. In Van Hoydonck et al. (2018), a sliding grid approach was used  with an inner and outer domain to accomplish this.
    The results show correct qualitative behaviour for the lift and drag force of the rudder both in normal flow  conditions as well as in reverse flow conditions. The numerically estimated lift curve slope in normal flow  conditions is shown to agree very well with a theoretical estimate of the slope. The coefficient values are  interpolated to one and five degree increments with very little difference between the interpolations. 

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