Resistance Prediction of Yacht Based on CFD and Profile Deformation of Bulbous Bow

doi:10.3969/j.issn.1674-0696.2023.02.20

Abstract

Abstract: Aiming at the optimization of bulbous bow shape of yacht, a ship shape optimization method was established by use of the optimization platform composed of CAESES and SHIPFLOW software. Taking the yacht with a length of 49m as the mother ship, the three-dimensional model of the main hull was established. The relevant hydrodynamic calculation module was realized by SHIPFLOW software, and the optimal ship type of resistance was obtained through comparative calculation. The bulbous bow deformation module realized the automatic transformation of ship shape through CAESES software parametric deformation technology. With the wave making resistance as the optimization goal, the best ship shape of total resistance was obtained through the optimization algorithm and the total resistance calculation program. The optimization results show that for the yacht, the new bulbous bow shape with reduced resistance can be obtained by the proposed method under the condition of meeting engineering constraints.

Key words: ship engineering, bulbous bow, ship optimization, wave making resistance, total resistance

摘要： 针对游艇的球鼻艏型线优化问题，利用CAESES和SHIPFLOW软件组成的优化平台构建一种船型优化的方法。以船长为49 m的游艇为母船，建立主船体三维模型，有关水动力计算模块采用SHIPFLOW软件实现，通过对比计算得到阻力最优船型，球鼻艏变形模块则通过CAESES软件参数化变形技术实现船型的自动变换，以兴波阻力为优化目标，通过优化算法结合总阻力计算程序得出总阻力最佳船型。优化结果表明：对于该游艇，在满足工程约束的条件下，该方法可以得到阻力降低的新球鼻艏形状。

关键词: 船舶工程, 球鼻艏, 船型优化, 兴波阻力, 总阻力

CLC Number:

U662.3

YANG Jingdong, ZHAO Deng, PENG Wei, HUANG Yuntao. Resistance Prediction of Yacht Based on CFD and Profile Deformation of Bulbous Bow[J]. Journal of Chongqing Jiaotong University(Natural Science), 2023, 42(2): 144-148.

杨敬东, 赵登, 彭伟, 黄云涛. 基于CFD的游艇阻力预报及球鼻艏型线变形[J]. 重庆交通大学学报（自然科学版）, 2023, 42(2): 144-148.

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