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Hull Design Method Combining an Innovative Flow Solver Coupled With Efficient Multivariate Analysis and Optimization Strategies

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Abstract

An important application of optimization of a ship is the minimization of calm-water resistance for a given displacement. In this work, an innovative flow solver that combines free-surface effects with a viscous solution allows for an accurate drag prediction with fast turnaround times ideally suited for an optimization study. A large number of geometrical-design variables are considered in early-stage design; thus, in this article, different techniques are examined to reduce the curse of dimensionality. Different methods such as multivariate analysis are used to optimize the hull with respect to resistance over a range of different speeds for a given displacement.

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... A nonlinear transformation method was developed in [ 5 ] to operate on a table of offsets in order to alter the shape of a vessel. Detailed hydrodynamic optimization using an advanced flow solver has been done in [ 6 ] and a genetic algorithm was used in [ 7 ] to optimize the design of a trimaran by minimizing the total resistance. A genetic algorithm has also been used to optimize a B-series propeller in [ 8 ] for hydrodynamic performance using a strength constraint based on [ 9 ]. ...
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