Numerical study on thermal–hydraulic of liquid LBE in spiral-fin fuel rod bundle channels under radial non-uniform power distribution - Shengcai Zhang; Qian Li; Xuelong Li; Siwei Cai; Xuechen Liu; Nianmei Zhang; Chen Hu; Xian Zeng; Yulong Mao; Weihua Cai (Annals of Nuclear Energy, 2026)