水利学报2017，Vol.48Issue(5)：594-607,14.DOI:10.13243/j.cnki.slxb.20160921
基于响应曲面模型的泵站进水池参数优化方法研究
Research on optimization method of pump sump parameters based on response surface model
摘要
Abstract
The parameters of pump sump,especially the parameters of bell-mouth are significantly important for the flow pattern of pumping station.Thus,the floor clearance,back wall clearance and submergence of bell-mouth are taken as the design variables,and the weighting function composed of evaluation indexes for pressure,velocity and vortex is taken as objective function.Therefore,optimization design and analyses of two and three factors have been done on the basis of response surface model and CFD simulation.The results show that the interactions between variables and the flow pattern are significant,and the impact of submerged depth on floor clearance and back wall clearance cannot be ignored.Furthermore,the interaction (P=0.0019) between submergence and floor clearance is more significant than that (P=0.0696) of submergence and back wall clearance.The optimized pretreatment parameters are as follows:the floor clearance is 0.77D,and D indicates the bell-mouth diameter;the back wall clearance is 0.37D,and the submergence is 2.19D.Under the optimized parameters,the error between the actual value and the predict value of objective function is less than 4.82％.Comparing with the recommended parameters of Design code for pumping station,the hydraulic efficiency of computational domain and the uniformity of axial velocity distribution are 0.98％ lower and 5.92％ higher,respectively;and the vortex distribution value of pump sump profile is reduced by about three times,which greatly improved the flow pattern of the pumping station.So it can be concluded that the relationship between the design variables and the objective functions can be accurately presented by the two order polynomial response surface model,and the optimization method based on response surface model can be effectively used for the optimization of flow in pumping station.关键词
泵站/悬空高/后壁距/淹没深度/响应曲面模型Key words
pumping station/floor clearance/back wall clearance/submergence/response surface model分类
建筑与水利引用本文复制引用
资丹,王福军,姚志峰,叶长亮,许建中,李端明..基于响应曲面模型的泵站进水池参数优化方法研究[J].水利学报,2017,48(5):594-607,14.基金项目
国家自然科学基金资助项目(51321001,51139007) （51321001,51139007）
国家科技支撑计划项目(2012BAD08B03,2015BAD20B01) （2012BAD08B03,2015BAD20B01）
