为促进螺旋桨高效优化设计，结合基于NFFD技术、多输出高斯近似模型以及NSGA-Ⅱ多目标优化算法，构建一套包括螺旋桨变形重构—水动力性能快速预测—多目标优化的螺旋桨高效自动优化方法。首先，基于NFFD技术、以螺旋桨的几何参数为设计变量，实现螺旋桨三维模型的变形与重构；采用有限元数值仿真得出样本螺旋桨的水动力性能，并基于多输出高斯近似理论建立螺旋桨几何参数和水动力性能之间的近似模型。最后，结合高斯近似模型和NSGA-Ⅱ算法对KP505桨进行了多目标优化设计，验证方法应用于螺旋桨优化设计的可行性。结果表明，该方法实现了对KP505桨扭矩系数降低3.3%、效率提高2.6%的多目标优化，验证了该方法应用于螺旋桨优化设计的可行性。
In order to promote the efficient and optimal design of the propeller, combined with the NFFD technology, the multi-output Gaussian approximation model and the NSGA-II multi-objective optimization algorithm, a set of propeller high-efficiency propellers including propeller deformation reconstruction - rapid prediction of hydrodynamic performance - multi-objective optimization was constructed. Automatic optimization method. Firstly, based on NFFD technology, the geometric parameters of the propeller are used as design variables to realize the deformation and reconstruction of the three-dimensional model of the propeller; secondly, the hydrodynamic performance of the sample propeller is obtained by using finite element numerical simulation, and the propeller is established based on the multi-output Gaussian approximation theory. The approximate model between geometric parameters and hydrodynamic performance; finally, combined with Gaussian approximate model and NSGA-Ⅱ algorithm, the multi-objective optimization design of KP505 propeller is carried out, and the feasibility of applying the method to the optimal design of propeller is verified. The results show that the method achieves the multi-objective optimization of reducing the torque coefficient of KP505 propeller by 3.3% and increasing the efficiency by 2.6%, which verifies the feasibility of the method applied to the optimal design of the propeller.
2022,44(19): 46-51 收稿日期：2022-03-04
DOI：10.3404/j.issn.1672-7649.2022.19.010
分类号：U662.2
基金项目：国家重点研发计划战略性国际科技创新合作重点专项 （2016YFE0202700）
作者简介：刘旭(1980-)，男，副教授，研究方向为船舶与海洋工程流体性能
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