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中文摘要：
采用k-ε模型对贯流式水轮机导叶绕流做整体数值分析。为更好的控制来流,计算域进口采用速度边界条件;同时对导叶壁面进行了边界层细化。在数值分析基础上计算了不同开度、不同位置的贯流式水轮机导叶水力矩值。计算结果与试验结果对比分析表明：不同位置导叶水力矩计算结果与模型试验结果均有着较好的对应关系,导叶水力矩计算最大值与桨叶大转角工况水力矩试验值接近。说明应用本文方法求解导叶水力矩是合理、有效的。计算所得到的水力矩结果可以作为贯流式水轮机原型机设计的指导数据。最后计算了非同步工况导叶水力矩,获得了非同步导叶水力矩最大值与同步导叶水力矩最大值的一般数量关系。
英文摘要：
The flow regimes of the bulb turbine are analyzed by the k-ε turbulence model to calculate the hydraulic torque of guide vanes at different openings and positions.Velocity inlet condition is adopted and the meshes near the wall are refined.The comparison of the calculation result with the model test data shows that the calculated maximum torque is closed to that of test for bulb turbine.On this basis the torque of guide vane in non-synchronous conditions are calculated,the relationship of the maximum torque between non-synchronous and synchronous condition is estimated.
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