The Spatiotemporal Correlation Between Hydraulic Loss and Liutex-Based Vortex Dynamics Across Four Stall Regimes in a Pump-Turbine. - Liu, Zekai; Qin, Yonglin; Jiang, Boshuang; Han, Shuangqian; Zhang, Bowen; Zhao, Haoru; Zhu, Baoshan; Wang, Hongjie (Energies (19961073), 2026)