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Parametric hull design was used together with CFD to conduct a hull shape optimisation study for a round-bilge, semi-displacement hull form.
A semi-displacement hull optimisation study is carried out with the goal of reducing effective power. The subject of the study is a round-bilged semi-displacement vessel based on the AMECRC hull series. Three speeds are considered spanning Froude numbers from 0.5 to 1.0, thus taking into account different sailing regimes.
Semi-displacement hull optimisation is carried out for three hull parameters: 1. longitudinal center of buoyancy, 2. width of the transom stern, 3. depth of the transom stern.
The parent AMECRC hull is characterized by a transom stern with width close to the maximum waterline width amidship. LCB was varied between -1 and 1 metre of displacement relative to the parent hull, or 2.5% of Lpp. Resistance reduction of up to 5 % is achieved at the highest speed.
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Exhibitor; Cloud Towing Tank
