Research on Bulbous Bow Optimization Based on the Improved PSO Algorithm |
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| Authors: | ZHANG Sheng-long ZHANG Bao-ji Tahsin TEZDOGAN XU Le-ping and LAI Yu-yang |
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| Institution: | Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China,College of Ocean Environment and Engineering, Shanghai Maritime University, Shanghai 201306, China,Department of Naval Architecture & Ocean and Marine Engineering, University of Strathclyde, Glasgow G4 0LZ, UK,Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China and Beijing Soyotec Co., Ltd., Beijing 100062, China |
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| Abstract: | In order to reduce the total resistance of a hull, an optimization framework for the bulbous bow optimization was presented. The total resistance in calm water was selected as the objective function, and the overset mesh technique was used for mesh generation. RANS method was used to calculate the total resistance of the hull. In order to improve the efficiency and smoothness of the geometric reconstruction, the arbitrary shape deformation (ASD) technique was introduced to change the shape of the bulbous bow. To improve the global search ability of the particle swarm optimization (PSO) algorithm, an improved particle swarm optimization (IPSO) algorithm was proposed to set up the optimization model. After a series of optimization analyses, the optimal hull form was found. It can be concluded that the simulation based design framework built in this paper is a promising method for bulbous bow optimization. |
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| Keywords: | bulbous bow overset mesh RANS method ASD technique IPSO algorithm |
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