一种低雷诺数错层翼的翼型优化设计方法

• Format: Patent
• Language: Chinese
• Published: 28.06.2019
• Subjects: CALCULATING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PHYSICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

本发明公开了一种低雷诺数错层翼的翼型优化设计方法，属于飞行器设计技术领域。本发明针对错层翼，采用NURBS曲线拟合法对翼型进行参数化，前后翼分别选取13个控制点进行控制；采用网格自动重构技术生成计算网格，基于与k-ω SST湍流模型耦合的γ-Re转捩模型对流场进行数值模拟；采用DOE抽样与多岛遗传算法结合的组合优化策略进行优化：应用最优拉丁超立方设计在设计空间中均匀采样，捕捉整个设计空间中最有效的设计区域，然后利用多岛遗传算法在最有效的设计区域中进行优化设计。本发明对错层翼的翼型进行优化，降低错层翼的不利气动干扰，提高其升阻比，在保证计算精度的基础上减小计算量，提高优化效率。 The invention discloses an optimization design method for wing types of low-Reynolds-number staggered-floor wings, and belongs to the technical field of flight vehicle design. Specific to the staggered-floor wings, the wing types are subjected to parameterization by adopting an NURBS curve fitting method, and 13 control points are selected on front and back wings for control separately; computational grids are generated by adopting an automatic grid reconstruction technology, and numerical value simulation on a flow field is carried out based on a -Re transition model which is coupled with a k- SST turbulence model; and optimization is carried out by a combined optimization strategy by combination of DOE sampling and a mul