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本文提出了一种考虑转轮及相关过流部件内流动相互影响的轴流式水轮机转轮全三维有旋流动设计方法:在流动无粘不可压条件下,采用连续分布的涡和源汇代替叶片的作用,依据转轮内流动的周期特性,将转轮内三维有旋流动分解为周向平均流动和三维周期性流动,导出了周期性流动控制方程和平均流动控制方程以及叶片方程.在给定叶片速度矩分布、叶片厚度分布和转轮轴面几何形状条件下,迭代求解流动控制方程及叶片方程,实现了轴流式水轮机转轮的全三维有旋流动设计.
In this paper, a full three-dimensional swirling flow design method of axial-flow turbine considering the interaction of flow in runner and related overcurrent components is proposed. In the condition of flow non-stick and unpressurized, continuous distribution of vortex and source sink is used instead According to the periodic characteristics of the flow in the rotor, the three-dimensional swirling flow in the rotor is decomposed into the circumferential average flow and the three-dimensional periodic flow. The periodic flow control equation, the average flow control equation and the blade equation are derived. The flow control equation and the blade equation are iteratively solved given the blade velocity moment distribution, the blade thickness distribution and the rotor geometry. The three-dimensional swirling flow design of the axial-flow turbine runner is achieved.