航空科学技术2024，Vol.35Issue(11)：19-26,8.DOI:10.19452/j.issn1007-5453.2024.11.003
基于离散伴随方法的三维机翼外形优化设计
Optimization Design of 3D Wing Shape Based on Discrete Adjoint Method
摘要
Abstract
Nowadays,the fuel consumption problem of civil aircraft is serious,so it is important to carry out aerodynamic shape optimization to improve the aerodynamic performance and fuel efficiency.Under the condition that the lift force is constant,the wing thickness and pitching moment is no lower than the constraint value,the aerodynamic shape optimization design of Boeing 737-800 wing is carried out with the design goal of reducing the wing drag and improving the lift-drag ratio of the wing.The gradient information is obtained based on discrete adjoint method,the FFD is used in the wing surface parametrization and the numerical simulation is based on the compressible Euler equation for shape optimization.The results show that FFD is feasible,the resistance of 3D wings decreases significantly,the lift-drag ratio increases markedly,and the optimization effect is significant under the conditions of transonic speed and small angle of attack.The optimization design method established in the paper provides a reference for the aerodynamic optimization design of civil aircraft and can be widely used in engineering practice.关键词
离散伴随方法/自由变形技术/气动外形优化/升阻比/CFD技术Key words
discrete adjoint method/FFD technique/aerodynamic shape optimization/lift-drag ratio/CFD technology分类
航空航天引用本文复制引用
何建东,崔圆,杨秀清,郭建国..基于离散伴随方法的三维机翼外形优化设计[J].航空科学技术,2024,35(11):19-26,8.基金项目
内蒙古自然科学基金(2024LHMS01012) Inner Mongolia Natural Science Fund(2024LHMS01012) （2024LHMS01012）
