基于CFD的翼型水动力性能多目标优化设计  

Multi-objective optimization for airfoil hydrodynamic performance design based on CFD techniques

作　　者：李胜忠[1] 赵峰[1] 杨磊[1] 

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2010年第11期1241-1248,共8页Journal of Ship Mechanics

摘　　要：随着计算机技术的飞速发展,如何进一步发挥CFD在船舶工程优化设计中的作用,成为当前CFD应用研究的一个重点。文章通过集成CFD工具、优化算法和几何重构技术构建了基于CFD的构型水动力性能优化设计平台。以翼型作为优化对象,阻升比和尾流均匀度作为目标函数,采用Bezier曲线方法实现翼型几何表达与重构,利用DOE和NSGAⅡ算法对NACA0024翼型进行了多目标全局优化设计,获得了均匀分布的Pareto最优解集。结果表明该平台可以用于翼型水动力性能多目标优化设计。此外,文中的工作为进一步开展基于CFD的船型水动力优化设计打下了坚实的基础。In the ship design optimization process, how to further boost the role of CFD becomes a focus of current application of CFD. In this paper, automatic design optimization platform of the formation based on CFD was realized by integrating CFD codes, optimization algorithms and geometry modification approaches. By using DOE method and NSGA Ⅱ algorithms, the Naca0024 airfoil is optimized under constraint conditions. And Pareto optimal solution sets are obtained. In the procedure, the ratio of drag to lift and the wake field uniformity are chosen as objective functions. The geometry of airfoil is modified automatically by the Bezier curve method. The results show that this platform can be used for multi-objective optimization of airfoil hydrodynamic performance design. In addition, this research will build the foundation for design optimization of ship hulls based on CFD.

关 键 词：翼型优化设计 CFD 多目标优化 水动力性能 NSGAⅡ算法 Bezier曲线方法 

分 类 号：U661.3[交通运输工程—船舶及航道工程]