南京航空航天大学学报（英文版）2023，Vol.40Issue(z2)：9-17,9.DOI:10.16356/j.1005-1120.2023.S2.002
基于CFD的飞翼布局无人机气动外形优化
Aerodynamic Shape Optimization of a Flying-Wing UAV
摘要
Abstract
The flying-wing layout,characterized by its distinctive aerodynamic fusion of the wing and fuselage,markedly augments the effective lift surface area of an aircraft.Both shape optimization and layout optimization play equally vital roles in enhancing the aerodynamic performance of this kind of configurations.In this paper,to address the aerodynamic shape optimization challenges pertaining to flying-wing unmanned aerial vehicle(UAV),an efficient parametric modeling method is introduced.This method facilitates the parametric deformation control of complex shapes.It integrates gradient-based optimization algorithms,discrete adjoint methods,and computational fluid dynamics(CFD)techniques grounded in Reynolds average Navier-Stokes(RANS)equations to achieve aerodynamic shape optimization and reduce drag for flying-wing UAV,resulting in a notable 7.17%improvement in the lift-to-drag ratio.The optimization results indicate that,while adhering to constraint requirements,the aerodynamic optimization design method based on these methodologies exhibits robust adaptability to wing-fuselage blended configurations,effectively enhancing the aerodynamic performance of unmanned aerial vehicles.关键词
飞翼布局/气动优化/计算流体力学/伴随方法/自由格式变形Key words
flying-wing layout/aerodynamic optimization/computational fluid dynamics/discrete adjoint/free-form deformation分类
航空航天引用本文复制引用
安英韬,沐旭升,赵永辉..基于CFD的飞翼布局无人机气动外形优化[J].南京航空航天大学学报（英文版）,2023,40(z2):9-17,9.基金项目
This work was supported in part by the National Natural Science Foundation of China(No.11972180). （No.11972180）
