The Minimum Wave Resistance of Hull Form Design Method Based on CFD Method
The Minimum Wave Resistance of Hull Form Design Method Based on CFD Method
复制标题
基于CFD方法的船体最小波浪阻力设计方法
DOI：
10.5957/jspd.09180036
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发表时间：
2019
影响因子：
0.4
通讯作者：
She Wen-Xuan
中科院分区：
文献类型：
--
作者：
Zhang Bao-Ji;Zhang Chi;She Wen-Xuan
为减小船舶在实际航行中的阻力，提出了一种最小兴波阻力的船体体型优化设计方法。基于CFD（计算流体动力学）理论建立了规则波数值波浪水槽。采用重叠网格技术对船体外形和自由曲面进行网格划分。以修正函数的参数为设计变量，生成新的船体偏置。通过三维CAD建模技术，确定了优化后的船体外形的几何表达和重构。以排水量极限为基本约束，考虑其他附加约束，采用非线性规划二次线搜索算法，在ISIGHT平台上建立了船体形状优化的数学模型。对Wigley型船体和DTMB 5415型水面舰艇进行了优化计算。与母型船体相比，优化后的船体外形的兴波阻力显著降低，证实了该方法的可行性。研究成果可为“绿色船舶“设计的开展提供技术支持。
To reduce the resistance of the ship in actual navigation, a hull form optimization design method for minimum wave resistance is proposed. A numerical wave tank of regular waves is established based on the CFD (Computational Fluid Dynamics) theory. Overlapping grid technology is adopted to mesh the hull form and free surface. The new hull offsets are generated by using the parameters of modified function as design variables. The geometric expression and reconstruction of optimized hull form is determined through the three-dimensional CAD (Computer Aided Design) modeling technology. The displacement limit was used as the basic constraint, and other additional constraints were considered; nonlinear programming quadratic line search algorithm was used to set up a mathematical model of hull form optimization on the ISIGHT platform. The optimization calculations of Wigley hull form and surface ship DTMB5415 are carried out. Compared with the parent hull, the wave resistance of the optimized hull form is significantly reduced, and the feasibility of this method is confirmed. The research results can provide technical support for the development of "green ship"design.