ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Method of three-dimensional curved stream-surface and its application in external waverider
Received date: 2024-04-07
Revised date: 2024-05-22
Accepted date: 2024-06-03
Online published: 2024-06-14
Supported by
National Natural Science Foundation of China(U21B6003);Project 1912
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 accurately 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 surface 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 Osculating 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.
Kai YANG , Mengfei ZHANG , Chongguang SHI , Yaokun YU , Xiaogang ZHENG , Chengxiang ZHU , Yancheng YOU . Method of three-dimensional curved stream-surface and its application in external waverider[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2025 , 46(2) : 130492 -130492 . DOI: 10.7527/S1000-6893.2024.30492
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