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针对不同上冠斜置泵板结构方案影响黄登水电站机组顶盖取水的问题,基于计算流体动力学(CFD)和工程流体力学的基本理论,以商用CFD分析软件为平台,从顶盖取水口压力、上冠轴向水推力和泵板能耗的角度,分析了辐射径向布置泵板及泵板逆转轮旋转方向斜置30°、45°三种方案7种工况下的上冠流道内部流动特性。结果表明,斜置45°的泵板结构能获得最大的取水压力且产生的上冠轴向水推力最小,斜置30°的泵板结构能耗最低,在顶盖取水系统设计中应根据水轮机运行工况范围特点选择不同的泵板结构。
According to the basic theory of computational fluid dynamics (CFD) and engineering fluid mechanics (CFD), taking the commercial CFD analysis software as a platform, Pressure, crown axial water thrust and energy consumption of the pump, the analysis of the radiation radial layout of the pump plate and the reverse rotation of the pump plate counterclockwise rotation of 30 °, 45 ° three programs three kinds of conditions under the crown Road internal flow characteristics. The results show that the structure of pump plate inclined 45 ° can obtain the maximum water pressure and the axial crown water thrust generated is the smallest. The energy consumption of the pump plate inclined 30 ° is the lowest. Operating conditions range Features Choose a different pump structure.