防洪排涝泵站出水流道CFD优化设计

为实现排涝泵站出水流道的优化设计,根据泵站基本参数设计出14种出水流道方案,各方案具有不同的龟背形式、倒圆弧半径、倒直角等结构参数。在0.9Q1、Q1、.15Q3种工况下,利用CFD技术,采用标准κ-ε湍流模型对14种方案的内部三维流动进行数值模拟。计算结果表明:在出水流道的进出口尺寸相同条件下,龟背和倒圆弧的设计方案水力损失最小,因此选择该方案合理,实现了流道水力特性的预测,为出水流道水力设计优化和模型试验研究提供了参考依据。

Outlet Conduits CFD Optimum Design for Flood Control Pumping Station

The pump station effluent flow path is designed to achieve optimization of drainage flow path. 14 kinds of effluent schemes of flow path were designed, according to the basic parameter of pump station. Each scheme has the different structural parameters such as tortoise form of the back, pour the radius of circular arc, and right angle. In the operating modes of 0.9Q, Q and 1.15 Q, CFD technology was adopted. The three-dimensional inner flow of 14 kinds of schemes were simulated using the standard κ – ε. As a result, under the same sizes of import and export of effluent flow path, the hydraulic loss of tortoise form and pour is minimum. Therefore it is reasonable to select this scheme, fulfilling the forecast of hydraulic property of flow path. It has offered reference basis for the effluent hydraulic design optimization of flow path and the research of model test.