Wenguo LUO, Changkai HAO, Jianfeng ZHU, Yancheng YOU
DOI Number: XXX-YYY-ZZZ
Conference number: HiSST 2024-00114
Based on the computational principle of the inverse characteristic method, an inverse design method that can specify the compression process of the two-dimensional captured flow tube is developed for the external-compression multi-wave flowfield of curved surface compression. On this basis, it is proposed that a kind of configuration for curved shock system with the same intensity distribution in the capture height direction. An index parameter Ks named surface compression efficiency ratio is introduced to measure the performance of the equal-intensity-distribution flowfield. The both characteristics of the total pressure recovery and the compression efficiency in the cases of different shock numbers are emphatically studied. In addition, the compression limit of curved shock system is discussed when the initial shock wave is given in different function forms. The results show that enhancing the curved compression characteristics of the initial shock wave, rather than adding one or two shock waves, could be possible to achieve a total pressure recovery equivalent to or even better than that of the straight shock system, so as to simplify the flowfield wave system. Limiting the curvature of the initial shock wave within a certain range could improve the compression efficiency, achieving the reasonable allocation of shock compression and isentropic compression.