数值模拟及可视化技术在旋转水力机械设计中的应用

Application of numerical simulation and VISC technique to rotary hydraulic machinery design

以苏州市仙人大港泵站工程为例,对泵站的叶轮、导叶及平面轴伸式流道进行三维立体图形显示,对排涝、引水等不同运行工况下泵站装置全流道三维流场进行数值模拟,并给出了流道中各点流速及压力等物理参量的空间分布.模拟结果以平面、立体相结合的方式展示,直观、逼真.该技术可用于流道型线的优化、结构形式及尺寸的多方案快速比选,并可预测水力机械性能,为旋转水力机械的设计和建设提供决策支持.

With the Xianrendagang pumping station of Suzhou City taken as an example, 3D numerical simulation of impeller blades, guide blades, and planar water way in axial direction of the pumping station was performed by use of the technique of 3D visualization in scientific computing（ VISC）. Three-dimensional flow field for the whole water way of the pumping station was simulated under drainage and water diversion conditions, and the spatial distributions of flow velocity and pressure at different points in the water way were also given. The simulated results were shown in 2D and 3D ways. The present method can be applied to linetype optimization of water ways, fast comparison and determination of rational style and size, and prediction of performance of hydraulic machinery, providing a decision-making support for design and construction of hydraulic machinery.