肘形进水流道优化设计与数值计算

为了提高泵站进水流道的设计水平,对应用最为广泛的肘形进水流道的型线进行了数学建模,并采用高级程序设计语言Visual Basic对工程图形处理软件AutoCAD进行二次开发,形成基于流道设计参数的优化设计软件,能够快速进行流道型线的绘制,并能使流道的型线自动符合流速渐变的原则.同时结合三维紊流数值模拟技术和流道的模型试验对流道的水力性能进行检验.通过工程实例说明,该流道设计方法快速、可靠,所设计的肘形进水流道具有出口流态较好、水力损失较小的优点.

Optimum Hydraulic Design and Model Test for Elbow Inlet Passage

The elbow inlet passage is widely used in pumping stations. In order to raise the design level of the inlet passage, the mathematical model has been made for the geometric contours of elbow inlet passage accord with the principles of gradual rate. Based on second-development of AutoCAD, the general software for hydraulic optimum design has been developed based on the geometrical parameters of elbow inlet passage. The optimum geometric parameters of the elbow inlet passage are obtained quickly with the software. And the hydraulic performaces are verified with CFD and model tests. The results of the examples illustrate that the method is quick and reliable, and the designed inlet passages have the advantages of small hydraulic loss and good flow pattern.