Experimental Research on Noise Reduction for Continuous Transonic Wind Tunnel Loop Jiming Chen, Shenghao Wu, Zhenhua Chen, Jinlei Lyu and Haitao Pei JNWPU, 38 4 (2020) 855-861 Published online: 06 October 2020 DOI: 10.1051/jnwpu/20203840855