跨声速飞机高可信度多设计点多约束气动优化设计技术研究  

Research of the Multiple Design-Points High-Fidelity Aerodynamics Optimization Technologies for the Transonic Aircraft with the Multiple Constraints

作　　者：雷国东 李岩 Lei Guodong;Li Yan(Chinese Aeronautical Establishment,Beijing 100012,China)

机构地区：[1]中国航空研究院

出　　处：《航空科学技术》2019年第9期9-18,共10页Aeronautical Science & Technology

摘　　要：本文目的是研究和开发工程实用的高可信度数值优化设计技术,并应用于先进跨声速飞机机翼的三维气动外形优化设计。本文综合应用了自由几何变形(FFD)几何外形参数化方法、弹簧比拟非结构网格变形方法、基于RANS方程的高可信度计算流体力学(CFD)分析方法、径向基函数(RBF)代理模型方法、粒子群寻优(PSO)方法等技术,分别对NASACRM模型、航空工业设计的W2机翼模型展开了单设计点和多设计点的三维气动外形优化设计。通过对单设计点优化设计后的CRM翼身组合体、双设计点优化设计后的W2机翼模型气动外形进行详细的气动分析,发现优化后的CRM翼身组合体、W2机翼模型相对初始外形气动性能得到显著改进,证实了数值优化设计技术应用于先进跨声速飞机机翼三维气动外形设计的有效性。同时证实了开发的数值优化设计技术和工具的正确性和实用性。This paper focused on the research and development of the high-fidelity numerical optimization technologies used in the three dimensional optimal wing shape design of the advanced transonic aircrafts.The FFD geometry parameterization,spring method of the deformed unstructured meshes,the high-fidelity CFD method based on the RANS equations,the RBF surrogate method,the PSO algorithm are integrated to an in-house code.Taking account of the single or multiple design-points,the optimal shape redesign of the NASA CRM model with the single design point optimization,the W2 wing designed by the research group with the dual design-points are optimized.The aerodynamic performances of the optimal wing-body and wing shapes are obviously improved compared with those of the original shapes,so it is proven that the numerical optimization technologies can be used in the optimal wing-body and wing shapes design of the advanced transonic aircrafts.And the technologies and tools developed for the threedimensional geometry are correct and practical.

关 键 词：FFD 弹簧比拟 RANS方程 RBF代理模型 粒子群算法 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]