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
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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