The flow field of double-row annular cascades of hydraulic turbines is studied by means of digital analysis in combination with model tests.
采用数值分析与模型实验相结合的方法，对水轮机导水部件双列环列叶栅流场进行了分析研究。
2
Structure of double-row blades can resolve the problem of mixing inefficient zone and improve mixing performance of interaction between machine member and concrete.
双排叶片结构较好地解决了搅拌低效区问题，改善了机构与混凝土相互作用的搅拌性能。
3
The best design is made according to the design and analysis of practical retaining structure with double-row piles and as well as the revision of different programs with PKPM.