Effect of Airfoil Parametrization on the Optimization of Counter Rotating Open Rotors
Effect of Airfoil Parametrization on the Optimization of Counter Rotating Open Rotors
复制标题
翼型参数化对反向旋转开式转子优化的影响
DOI：
10.2514/6.2019-0698
复制
发表时间：
2019
期刊：
影响因子：
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通讯作者：
N. Andersson
中科院分区：
文献类型：
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作者：
Gonzalo Montero Villar;Daniel Lindblad;N. Andersson
本研究比较了两种优化对旋转开放转子（CRORs）在相同的操作条件下运行。这两种优化方法的主要区别在于用于构造叶片的翼型轮廓。第一种使用NACA 16系列翼型，而第二种使用参数化翼型CST。两个独立的多目标优化进行使用近似相同的计算资源。除翼型外的所有设计变量都保持相同的设计自由度，以便进行公平的比较。这两套配置的空气动力学优化的最大推力系数和效率在顶部的爬升条件。优化是使用多目标差分进化（DE）加上三维RANS模拟和径向基函数（RBF）元建模。
The present study compares two optimizations performed on Counter Rotating Open Rotors (CRORs) running at the same operating condition. The main difference between the two optimizations is the airfoil profile used to construct the blades. The first, uses the NACA 16 family of airfoils, whereas the second one, uses a parametrized airfoil type, CST. Two independent multi-objective optimizations are carried out using approximately the same computational resources. All the design variables except those concerning the airfoil profile, are kept with the same design freedom so that a fair comparison can be made. Both sets of configurations are aerodynamically optimized for maximum thrust coefficient and efficiency at top of climb conditions. The optimization is performed using multi-objective Differential Evolution (DE) coupled with 3D RANS simulations and Radial Basis Function (RBF) meta-modeling.