潮流能叶轮叶片单向流固耦合有限元分析

摘要

Blade is an important part of tidal current turbine impeller, and the turbine is greatly influenced by blade during its working process. The rotating flow field and vertical water flow field of impeller blades are calculated under multiple working conditions, and the surface pressure distribution of impeller blades under different working conditions is obtained. The unidirectional fluid-solid coupling method is used to transfer the data between the two physical fields of fluid domain and structure domain, and the variation of blade deformation and stress and strain is obtained. The research results have important reference significance for the structural optimization design of tidal current impeller blades.%叶片是潮流能水轮机叶轮的重要部件,水轮机在工作过程中受叶片的影响很大.文中采用有限元法研究了叶轮叶片的流固耦合特性,对叶轮叶片旋转流场和垂直水流场进行多工况计算,得出不同工况下叶轮叶片表面压力的分布情况.采用单向流固耦合的方法完成流体域和结构域两个物理场之间数据的传递,得出叶片变形及应力应变的变化情况.研究成果对潮流能叶轮叶片的结构优化设计有重要的参考意义.