基于DPM和RSM的一体化预制泵站结构优化

Structure optimization of integrated prefabricated pumping station based on DPM and RSM

为了研究一体化预制泵站的沉积问题,基于FLUENT软件中的DPM模型对圆筒式一体化预制泵站进行了数值计算,分析了悬空高、泵间距、中心距等位置因素对于预制泵站内沉积率特性的影响,结果表明:随着悬空高和泵间距的增大,沉积率呈增大趋势;随着中心距增大,沉积率先增大后减小;沉积率都高于60%。针对圆筒式预制泵站的流动问题,将其结构改成对隔流式,并以泵站内沉积率为目标,采用响应面法(RSM)对隔流式预制泵站隔流堰及预旋盆等结构参数进行优化,结果表明:优化后的最佳结构参数组合的沉积率最低降至25.4%。

In order to study the deposition problem of the integrated prefabricated pumping station,the cylindrical integrated prefabricated pumping station is numerically calculated based on Discrete Phase Model,and the influence of the location factors such as the suspended height,pump spacing,and center distance on the deposition rate characteristics in the prefabricated pumping station is analyzed.The results show that with the increase of the suspended height and the distance between the pumps,the deposition rate shows an increasing trend;with the increase of the center distance,the deposition rate increases first and then decreases;the deposition rates are all higher than 60%.In view of the flow problems of the cylindrical prefabricated pumping station,by modifying the structure to the flow separation type and taking the deposition rate in the pumping station as the object,the parameters of structures such as the flow weir and pre-rotation basin of the flow separation prefabricated pumping station using the Response Surface Methodology are optimized.The results show that the deposition rate of the optimized combination of optimal structural parameters is reduced to as low as 25.4%.