Receptivity characteristics of a hypersonic boundary layer under freestream slow acoustic wave with different amplitudesXiaojun Tang, Xusheng Zhu, Tianli Hui, Wentao Yu, Fenglong Yang and Chengyu CaoEur. Phys. J. Appl. Phys., 79 3 (2017) 31101DOI: https://doi.org/10.1051/epjap/2017160411