Abstract
Trim optimization is an effective tool that the International Maritime Organization recommends (IMO) to increase marine vessels' economic efficiency. This paper comprehensively evaluated the effect of the initial trim and draft on various resistance and hydrodynamic propulsion components of the fully appended ONR tumblehome model. In this regard, a complete set of resistance, double-body, and self-propulsion tests were simulated in the computational fluid dynamics (CFD) environment for different initial trim and draft conditions in constant displacement. The validation of the results with the available experimental data demonstrated an excellent agreement among them. The analysis result revealed that for this model, trim by fore reduced the total resistance, increased the thrust of the propellers, and thus increased hydrodynamic propulsive efficiency.
Published Version
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