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设计3组化容补水泵模型,运用Pro/E建立三维模型,由CFD软件仿真,并对水力模型进行试验,对比试验与仿真结果,获取最优模型。通过ANSYS Workbench建立CFD与Static Structural(静力学)和Modal(模态)连接,对最优模型进行分析,以泵三维定常数值计算结果为基础,利用顺序耦合技术,对固体和流体域进行迭代,分析叶轮的静态应力和振型。结果表明,在水压力作用下叶片变形最大位移发生在叶片出水边靠近叶片边缘处,由平衡孔作用,叶片的等效应力相对均匀较小,叶轮轮毂处因叶轮前后面压差作用,等效应力较大。设计工况下,叶轮轮毂变形对振型的影响明显。
Three groups of water pump models were designed. Pro / E was used to build the three-dimensional model. The CFD software was used to simulate the model. The hydraulic model was tested. The optimal model was obtained by comparing the results with the simulation results. CFD and Static Structural and Modal connections are established by ANSYS Workbench, the optimal model is analyzed, the solid and fluid domains are iterated by using the sequential coupling technique based on the three-dimensional steady-state pump numerical calculation results, Impeller static stress and vibration mode analysis. The results show that the maximum displacement of blade under water pressure occurs near the edge of the blade when it leaves the water, and the equivalent stress of the blade is relatively small by the balance hole. The impeller hub is affected by the pressure difference between the front and the back of the impeller, Greater power. Under the condition of design, the influence of impeller hub deformation on the vibration mode is obvious.