1. Ph.D. Student, School of Hydraulic Engineering, Dalian Univ. of Technology, Dalian 116024, China.
2. Associate Professor, School of Hydraulic Engineering, Dalian Univ. of Technology, Dalian 116024, China (corresponding author).
3. Professor of Engineering, Dept. of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China.
4. Professor, School of Hydraulic Engineering, Dalian Univ. of Technology, Dalian 116024, China.