Characteristics of Asymmetric Curls of a Halbach Hydroturbine Main Shaft Magnetofluid Sealing Device Under Random Rotational Speed Work Conditions. - Zhenggui Li; Jie Cheng 005; Deyou Li; Xiaohui Deng; Bing Dong; Xiaobing Liu; Biao Ma; Xinrui Li (IEEE Access, 2020)