Numerical analysis on wear mechanism and optimization of high-speed francis turbine under low loads

The operational effectiveness of hydraulic turbines in sediment-laden flow is significantly diminished by sediment abrasion, which has emerged as a primary impediment to the advancement of these turbines. To ensure Francis turbine units function safely and efficiently in the new situation, Jinkang Power Plant takes the No.1 unit as the research object. Through numerical simulation of various components’ wear and analysis of the wear mechanism, a reasonable scientific optimization strategy is given for improving the anti-wear performance, which guides the safe, stable, and economic operation of the Francis turbine.