兼顾气动和近场声爆特性的伴随优化  

Adjoint-based design optimization considering both aerodynamic and near-field sonic boom

作　　者：刘峰博 郝海兵 李典 梁益华[1] LIU Fengbo;HAO Haibing;LI Dian;LIANG Yihua(Aeronautical Key Laboratory of Computational Fluid Dynamics,Xi’an Aeronautics Computing Technique Research Institute,AVIC,Xi’an 710068,China)

机构地区：[1]中国航空工业集团公司、西安航空计算技术研究所、航空气动数值模拟重点实验室,西安710065

出　　处：《空气动力学学报》2023年第5期48-58,I0001,共12页Acta Aerodynamica Sinica

基　　金：航空科学基金(2019ZA031002)。

摘　　要：发展气动/声爆伴随优化设计方法对于研制新一代超声速客机具有重大意义。典型的气动/声爆伴随优化设计方法分为两种:近场信号的伴随优化和远场声爆预测耦合伴随设计优化。将最新发展的基于离散伴随理论的近场声爆信号反设计与气动特性优化结合,提出兼顾气动和近场声爆特性的伴随优化策略。首先,概述了伴随方程梯度求解和提出的基于信号射线方法的近场过压提取及目标过压装配过程,并验证了优化流程中近场信号及地面波形预测的准确性。其次,针对超声速民机标模,开展了低阻优化、近场低声爆反设计、兼顾气动和近场声爆特性的伴随优化三种策略的对比研究,结果表明兼顾气动和近场声爆特性优化策略的伴随优化在综合提升气动和低声爆特性上表现更优。最后与文献中相同算例的优化结果进行对比分析,进一步证明了该优化策略在超声速民机设计中的应用潜力。The development of aerodynamic&sonic boom accompanied optimization design method is of great significance to the development of the generation of supersonic passenger aircraft.The typical aerodynamic&sonic boom accompanying optimization design methods are classified as two types:the adjoint inverse design optimization of the near-field signal and the far-field sonic boom prediction coupling adjoint design optimization.Combining the latest development of discrete adjoint method near-field signal inverse design optimization with aerodynamic characteristics optimization,a near-field sonic boom adjoint inverse design strategy that takes into account aerodynamic characteristics is proposed.Firstly,it summarizes the solution of the adjoint equation gradient and the proposed near-field overvoltage extraction and target overvoltage assembly process based on the signal ray method,and verifies the accuracy of the near-field signal and ground waveform prediction during the optimization process.Secondly,for the standard model of supersonic civil aircraft,a comparative study of three optimization strategies was carried out:low drag optimization,near-field low-boom inverse design,and near-field low-boom inverse design with aerodynamic characteristics.The results show that the near-field low-boom inverse design with aerodynamic characteristics strategy performs better in the comprehensive improvement of aerodynamic and low-boom characteristics,and further proves the application potential of the proposed optimization strategy in the design of supersonic civil aircraft.

关 键 词：超声速客机 计算流体力学 气动优化 离散伴随方法 声爆优化 反设计 

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]