Abstract：An experimental study of silt abrasion on aluminium hydrofoil was performed in a converging-diverging testing section.The microscopic appearance of damage by silt abrasion on the hydrofoil was observed by SEM,and the flow field was measured by PIV.According to the microscopic appearance observed,the abrasive wear patterns were classified into three modes: ploughing,wedge and cutting types.The reason for the different appearance of damage at different position of the hydrofoil was analyzed with the help of PIV.The result showed that the microscopic appearance on the hydrofoil surface depended on the characteristic of silt motion.The degree and distribution of damage were also depended on the macroscopic characteristics of the silt following the flow.The result of PIV without silt helps to analyze the wear patterns by silt.The study has positive meaning for reducing the silt abrasion on the wetting surface of fluid machinery.hydraulic machinery;hydrofoil;silt abrasion;microscopic appearance;PIV;abrasive mode
陈次昌；张涛；陈丰；杨昌明；张刘樯. 翼型表面磨损破坏试验和流场PIV测试[J]. 排灌机械工程学报, 2007, 25(3): 1-5.
CHEN Ci-chang, ZHANG Tao, CHEN Feng, YANG Chang-ming, ZHANG Liu-qiang. An experimental study of silt abrasion on the surface of hydrofoil and flow measurement by PIV. Journal of Drainage and Irrigation Machinery Engin, 2007, 25(3): 1-5.
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