航空学报2025，Vol.46Issue(2)：103-113,11.DOI:10.7527/S1000-6893.2024.30492
三维弯曲流面法及其在外流乘波体中的应用
Method of three-dimensional curved stream-surface and its application in external waverider
摘要
Abstract
Using the most phenomenon of common shock wave in hypersonic flow for aerodynamic profile design is one of the important directions of aircraft research.To solve the three-dimensional curved shock flow field more accu-rately and efficiently,a new inverse design method,called the method of three-dimensional curved stream-surface,is proposed for the design of waverider.The new method discretizes the pre-given three-dimensional curved shock sur-face into multiple flow surfaces,and calculates the flow field in the curved flow surface according to the aerodynamic parameters of the stream-surface and their derivatives.In this way,the streamline in the calculation process is always in the curved stream-surface.Two shock waves with different three-dimensional characteristics are specified as input to prove the effectiveness of this method.The results show that the wall pressure ratio error is less than 1.07%in the conical flow field and the elliptic curved cone flow field compared with inviscid CFD results.At the same time,this method is applied to the design of waveriders for specified elliptic conical shock.The accuracy of this method for the design of waverider is verified by inviscid CFD simulation,with the maximum wall pressure ratio error being only 0.26%and the calculation time and resources being reduced by about 40%compared with the Local-Turning Osculat-ing Cones Method under the same conditions.Therefore,the method of three-dimensional curved stream-surface can greatly improve the scope and efficiency of the waverider design,and is conducive to the design of the aerodynamic system of hypersonic vehicle.关键词
三维弯曲激波/弯曲流面/乘波体/三维流动效应/高超声速Key words
three-dimensional curved shock wave/curved stream-surface/waverider/three-dimensional flow ef-fect/hypersonic分类
航空航天引用本文复制引用
杨凯,张勐飞,施崇广,余耀堃,郑晓刚,朱呈祥,尤延铖..三维弯曲流面法及其在外流乘波体中的应用[J].航空学报,2025,46(2):103-113,11.基金项目
国家自然科学基金(U21B6003,12202372) （U21B6003,12202372）
1912项目 National Natural Science Foundation of China(U21B6003,12202372) （U21B6003,12202372）
Project 1912 （）
