混流式水轮机转轮内流固耦合的有限元模型  

The finite element model on the system of fluid-structure interaction in runner of francis hydro-generator

作　　者：蔡敢为[1] 蓝永庭[1] 李兆军[1] 杨旭娟[1] 

机构地区：[1]广西大学机械工程学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2008年第1期35-39,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(50175031;50565001);教育部科技重点项目(205119);广西科学基金资助项目(0542005);广西"新世纪十百千人才工程"专项资金资助项目(2003203)

摘　　要：通过分析转轮在发电机组运行时的运转特点,推导出了转轮内部流体域以及叶片固体域的运动微分方程和边界条件,并根据变分原理,运用加权余量的迦辽金法,建立了转轮内部流固耦合有限元模型,模型反映了流体参数,机械振动状态以及叶片结构参数的相互关系.The differential equations of motion and boundary conditions were deduced on solid field of runner blades and the fluid domain according to the analysis of the operating characteristics of hydroturbine runner in this paper. In accordance with the variational principle,the finite element model on the fluid-structure interaction in runner was established by the weighted residuals Galerkin method. This model reflects the mutual relationship of the state of fluids,mechanical vibration and the structure of blades.

关 键 词：混流式水轮机 流固耦合 有限元模型 变分原理 

分 类 号：TH113[机械工程—机械设计及理论] O322[理学—一般力学与力学基础]